4 bedroom houses for rent in Biobio Region – 79 available homes

79 results

    4 bedrooms house of 1773.01 m² - Cozy living space
    4 bedrooms house of 1773.01 m² - Stylish comfort
    4 bedrooms house of 1773.01 m² - Your new rental home
    4 bedrooms house of 1773.01 m² - Excellent rental offer
    4 bedrooms house of 1773.01 m² - Well-planned
    4 bedrooms house of 1773.01 m² - Bright interior
    4 bedrooms house of 1773.01 m² - Efficient space
    4 bedrooms house of 1773.01 m² - Clever design
    4 bedrooms house of 1773.01 m² - Ready for rent
    4 bedrooms house of 1773.01 m² - Airy feel
    4 bedrooms house of 1773.01 m² - Cozy living space
    4 bedrooms house of 1773.01 m² - Stylish comfort
    4 bedrooms house of 1773.01 m² - Your new rental home
    4 bedrooms house of 1773.01 m² - Excellent rental offer
    4 bedrooms house of 1773.01 m² - Well-planned
    4 bedrooms house of 1773.01 m² - Bright interior
    4 bedrooms house of 1773.01 m² - Efficient space
    4 bedrooms house of 1773.01 m² - Clever design
    4 bedrooms house of 1773.01 m² - Ready for rent
    4 bedrooms house of 1773.01 m² - Airy feel
    4 bedrooms house of 1773.01 m² - Cozy living space
    4 bedrooms house of 1773.01 m² - Stylish comfort
    4 bedrooms house of 1773.01 m² - Your new rental home
    4 bedrooms house of 1773.01 m² - Excellent rental offer
    4 bedrooms house of 1773.01 m² - Well-planned

    4 rooms house of 1773m²

    Ruta Q-45, Los Ángeles, Chile

    1.500.000 $ / month

    4 bedrooms house of 120.0 m² - Cozy living space
    4 bedrooms house of 120.0 m² - Stylish comfort
    4 bedrooms house of 120.0 m² - Your new rental home
    4 bedrooms house of 120.0 m² - Excellent rental offer
    4 bedrooms house of 120.0 m² - Well-planned
    4 bedrooms house of 120.0 m² - Bright interior
    4 bedrooms house of 120.0 m² - Efficient space
    4 bedrooms house of 120.0 m² - Clever design
    4 bedrooms house of 120.0 m² - Ready for rent
    4 bedrooms house of 120.0 m² - Airy feel
    4 bedrooms house of 120.0 m² - Cozy living space
    4 bedrooms house of 120.0 m² - Stylish comfort
    4 bedrooms house of 120.0 m² - Your new rental home

    4 rooms house of 120m²

    unnamed road, 409 1007 Concepcion, Chile

    900.000 $ / month

    4 bedrooms house of 207.0 m² - Cozy living space
    4 bedrooms house of 207.0 m² - Stylish comfort
    4 bedrooms house of 207.0 m² - Your new rental home
    4 bedrooms house of 207.0 m² - Excellent rental offer
    4 bedrooms house of 207.0 m² - Well-planned
    4 bedrooms house of 207.0 m² - Bright interior
    4 bedrooms house of 207.0 m² - Efficient space
    4 bedrooms house of 207.0 m² - Clever design
    4 bedrooms house of 207.0 m² - Ready for rent
    4 bedrooms house of 207.0 m² - Airy feel
    4 bedrooms house of 207.0 m² - Cozy living space
    4 bedrooms house of 207.0 m² - Stylish comfort
    4 bedrooms house of 207.0 m² - Your new rental home
    4 bedrooms house of 207.0 m² - Excellent rental offer
    4 bedrooms house of 207.0 m² - Well-planned
    4 bedrooms house of 207.0 m² - Bright interior
    4 bedrooms house of 207.0 m² - Efficient space
    4 bedrooms house of 207.0 m² - Clever design
    4 bedrooms house of 207.0 m² - Ready for rent
    4 bedrooms house of 207.0 m² - Airy feel
    4 bedrooms house of 207.0 m² - Cozy living space
    4 bedrooms house of 207.0 m² - Stylish comfort
    4 bedrooms house of 207.0 m² - Your new rental home

    4 rooms house of 207m²

    Camila Melo, 406 1735 Concepcion, Chile

    1.992.100 $ / month

    4 bedrooms house of 270.0 m² - Cozy living space
    4 bedrooms house of 270.0 m² - Stylish comfort
    4 bedrooms house of 270.0 m² - Your new rental home
    4 bedrooms house of 270.0 m² - Excellent rental offer
    4 bedrooms house of 270.0 m² - Well-planned
    4 bedrooms house of 270.0 m² - Bright interior
    4 bedrooms house of 270.0 m² - Efficient space
    4 bedrooms house of 270.0 m² - Clever design
    4 bedrooms house of 270.0 m² - Ready for rent
    4 bedrooms house of 270.0 m² - Airy feel
    4 bedrooms house of 270.0 m² - Cozy living space
    4 bedrooms house of 270.0 m² - Stylish comfort
    4 bedrooms house of 270.0 m² - Your new rental home
    4 bedrooms house of 270.0 m² - Excellent rental offer
    4 bedrooms house of 270.0 m² - Well-planned
    4 bedrooms house of 270.0 m² - Bright interior
    4 bedrooms house of 270.0 m² - Efficient space
    4 bedrooms house of 270.0 m² - Clever design
    4 bedrooms house of 270.0 m² - Ready for rent
    4 bedrooms house of 270.0 m² - Airy feel
    4 bedrooms house of 270.0 m² - Cozy living space
    4 bedrooms house of 270.0 m² - Stylish comfort
    4 bedrooms house of 270.0 m² - Your new rental home
    4 bedrooms house of 270.0 m² - Excellent rental offer

    4 rooms house of 270m²

    Avenida Principal, 408 1375 Concepcion, Chile

    1.400.000 $ / month

    4 bedrooms house of 60.0 m² - Cozy living space
    4 bedrooms house of 60.0 m² - Stylish comfort
    4 bedrooms house of 60.0 m² - Your new rental home
    4 bedrooms house of 60.0 m² - Excellent rental offer
    4 bedrooms house of 60.0 m² - Well-planned
    4 bedrooms house of 60.0 m² - Bright interior
    4 bedrooms house of 60.0 m² - Efficient space
    4 bedrooms house of 60.0 m² - Clever design
    4 bedrooms house of 60.0 m² - Ready for rent
    4 bedrooms house of 60.0 m² - Airy feel
    4 bedrooms house of 60.0 m² - Cozy living space
    4 bedrooms house of 60.0 m² - Stylish comfort
    4 bedrooms house of 60.0 m² - Your new rental home
    4 bedrooms house of 60.0 m² - Excellent rental offer

    4 rooms house of 60m²

    Manuel Montt, 419 0000 Coronel, Chile

    600.000 $ / month

    4 bedrooms house of 1194.55 m² - Cozy living space
    4 bedrooms house of 1194.55 m² - Stylish comfort
    4 bedrooms house of 1194.55 m² - Your new rental home
    4 bedrooms house of 1194.55 m² - Excellent rental offer
    4 bedrooms house of 1194.55 m² - Well-planned
    4 bedrooms house of 1194.55 m² - Bright interior
    4 bedrooms house of 1194.55 m² - Efficient space
    4 bedrooms house of 1194.55 m² - Clever design
    4 bedrooms house of 1194.55 m² - Ready for rent
    4 bedrooms house of 1194.55 m² - Airy feel
    4 bedrooms house of 1194.55 m² - Cozy living space

    4 rooms house of 1195m²

    unnamed road, 445 0814 Los Ángeles, Chile

    850.000 $ / month

    4 bedrooms house of 130.0 m² - Cozy living space
    4 bedrooms house of 130.0 m² - Stylish comfort
    4 bedrooms house of 130.0 m² - Your new rental home
    4 bedrooms house of 130.0 m² - Excellent rental offer
    4 bedrooms house of 130.0 m² - Well-planned
    4 bedrooms house of 130.0 m² - Bright interior
    4 bedrooms house of 130.0 m² - Efficient space
    4 bedrooms house of 130.0 m² - Clever design
    4 bedrooms house of 130.0 m² - Ready for rent
    4 bedrooms house of 130.0 m² - Airy feel
    4 bedrooms house of 130.0 m² - Cozy living space
    4 bedrooms house of 130.0 m² - Stylish comfort
    4 bedrooms house of 130.0 m² - Your new rental home
    4 bedrooms house of 130.0 m² - Excellent rental offer
    4 bedrooms house of 130.0 m² - Well-planned
    4 bedrooms house of 130.0 m² - Bright interior
    4 bedrooms house of 130.0 m² - Efficient space
    4 bedrooms house of 130.0 m² - Clever design

    4 rooms house of 130m²

    unnamed road, 409 1007 Concepcion, Chile

    1.280.000 $ / month

    4 bedrooms house of 140.0 m² - Cozy living space
    4 bedrooms house of 140.0 m² - Stylish comfort
    4 bedrooms house of 140.0 m² - Your new rental home
    4 bedrooms house of 140.0 m² - Excellent rental offer
    4 bedrooms house of 140.0 m² - Well-planned

    4 rooms house of 140m²

    Beltrán Mathieu 118, 407 0032 Concepcion, Chile

    1.200.000 $ / month

    4 bedrooms house of 170.0 m² - Cozy living space
    4 bedrooms house of 170.0 m² - Stylish comfort
    4 bedrooms house of 170.0 m² - Your new rental home
    4 bedrooms house of 170.0 m² - Excellent rental offer
    4 bedrooms house of 170.0 m² - Well-planned
    4 bedrooms house of 170.0 m² - Bright interior
    4 bedrooms house of 170.0 m² - Efficient space
    4 bedrooms house of 170.0 m² - Clever design
    4 bedrooms house of 170.0 m² - Ready for rent
    4 bedrooms house of 170.0 m² - Airy feel
    4 bedrooms house of 170.0 m² - Cozy living space

    4 rooms house of 170m²

    Los Ángeles, Provincia de Bío-Bío, Chile

    1.500.000 $ / month

    4 bedrooms house of 150.0 m² - Cozy living space
    4 bedrooms house of 150.0 m² - Stylish comfort
    4 bedrooms house of 150.0 m² - Your new rental home
    4 bedrooms house of 150.0 m² - Excellent rental offer
    4 bedrooms house of 150.0 m² - Well-planned
    4 bedrooms house of 150.0 m² - Bright interior
    4 bedrooms house of 150.0 m² - Efficient space
    4 bedrooms house of 150.0 m² - Clever design
    4 bedrooms house of 150.0 m² - Ready for rent
    4 bedrooms house of 150.0 m² - Airy feel
    4 bedrooms house of 150.0 m² - Cozy living space
    4 bedrooms house of 150.0 m² - Stylish comfort
    4 bedrooms house of 150.0 m² - Your new rental home
    4 bedrooms house of 150.0 m² - Excellent rental offer
    4 bedrooms house of 150.0 m² - Well-planned
    4 bedrooms house of 150.0 m² - Bright interior
    4 bedrooms house of 150.0 m² - Efficient space
    4 bedrooms house of 150.0 m² - Clever design
    4 bedrooms house of 150.0 m² - Ready for rent
    4 bedrooms house of 150.0 m² - Airy feel
    4 bedrooms house of 150.0 m² - Cozy living space
    4 bedrooms house of 150.0 m² - Stylish comfort
    4 bedrooms house of 150.0 m² - Your new rental home
    4 bedrooms house of 150.0 m² - Excellent rental offer

    4 rooms house of 150m²

    Avenida Principal, 408 1375 Concepcion, Chile

    1.400.000 $ / month

    4 bedrooms house of 250.0 m² - Cozy living space
    4 bedrooms house of 250.0 m² - Stylish comfort
    4 bedrooms house of 250.0 m² - Your new rental home
    4 bedrooms house of 250.0 m² - Excellent rental offer
    4 bedrooms house of 250.0 m² - Well-planned
    4 bedrooms house of 250.0 m² - Bright interior
    4 bedrooms house of 250.0 m² - Efficient space
    4 bedrooms house of 250.0 m² - Clever design
    4 bedrooms house of 250.0 m² - Ready for rent
    4 bedrooms house of 250.0 m² - Airy feel
    4 bedrooms house of 250.0 m² - Cozy living space
    4 bedrooms house of 250.0 m² - Stylish comfort
    4 bedrooms house of 250.0 m² - Your new rental home
    4 bedrooms house of 250.0 m² - Excellent rental offer
    4 bedrooms house of 250.0 m² - Well-planned
    4 bedrooms house of 250.0 m² - Bright interior
    4 bedrooms house of 250.0 m² - Efficient space
    4 bedrooms house of 250.0 m² - Clever design
    4 bedrooms house of 250.0 m² - Ready for rent
    4 bedrooms house of 250.0 m² - Airy feel

    4 rooms house of 250m²

    Ruta Q-524, 834 0422 Los Ángeles, Chile

    1.400.000 $ / month

    4 bedrooms house of 1773.01 m² - Cozy living space
    4 bedrooms house of 1773.01 m² - Stylish comfort
    4 bedrooms house of 1773.01 m² - Your new rental home
    4 bedrooms house of 1773.01 m² - Excellent rental offer
    4 bedrooms house of 1773.01 m² - Well-planned
    4 bedrooms house of 1773.01 m² - Bright interior
    4 bedrooms house of 1773.01 m² - Efficient space
    4 bedrooms house of 1773.01 m² - Clever design
    4 bedrooms house of 1773.01 m² - Ready for rent
    4 bedrooms house of 1773.01 m² - Airy feel
    4 bedrooms house of 1773.01 m² - Cozy living space
    4 bedrooms house of 1773.01 m² - Stylish comfort
    4 bedrooms house of 1773.01 m² - Your new rental home
    4 bedrooms house of 1773.01 m² - Excellent rental offer
    4 bedrooms house of 1773.01 m² - Well-planned
    4 bedrooms house of 1773.01 m² - Bright interior
    4 bedrooms house of 1773.01 m² - Efficient space
    4 bedrooms house of 1773.01 m² - Clever design
    4 bedrooms house of 1773.01 m² - Ready for rent
    4 bedrooms house of 1773.01 m² - Airy feel
    4 bedrooms house of 1773.01 m² - Cozy living space
    4 bedrooms house of 1773.01 m² - Stylish comfort
    4 bedrooms house of 1773.01 m² - Your new rental home
    4 bedrooms house of 1773.01 m² - Excellent rental offer
    4 bedrooms house of 1773.01 m² - Well-planned

    4 rooms house of 1773m²

    Ruta Q-45, Los Ángeles, Chile

    1.500.000 $ / month

    4 bedrooms house of 164.0 m² - Cozy living space
    4 bedrooms house of 164.0 m² - Stylish comfort
    4 bedrooms house of 164.0 m² - Your new rental home
    4 bedrooms house of 164.0 m² - Excellent rental offer
    4 bedrooms house of 164.0 m² - Well-planned
    4 bedrooms house of 164.0 m² - Bright interior
    4 bedrooms house of 164.0 m² - Efficient space
    4 bedrooms house of 164.0 m² - Clever design
    4 bedrooms house of 164.0 m² - Ready for rent
    4 bedrooms house of 164.0 m² - Airy feel
    4 bedrooms house of 164.0 m² - Cozy living space
    4 bedrooms house of 164.0 m² - Stylish comfort
    4 bedrooms house of 164.0 m² - Your new rental home
    4 bedrooms house of 164.0 m² - Excellent rental offer
    4 bedrooms house of 164.0 m² - Well-planned
    4 bedrooms house of 164.0 m² - Bright interior
    4 bedrooms house of 164.0 m² - Efficient space
    4 bedrooms house of 164.0 m² - Clever design
    4 bedrooms house of 164.0 m² - Ready for rent
    4 bedrooms house of 164.0 m² - Airy feel
    4 bedrooms house of 164.0 m² - Cozy living space
    4 bedrooms house of 164.0 m² - Stylish comfort
    4 bedrooms house of 164.0 m² - Your new rental home
    4 bedrooms house of 164.0 m² - Excellent rental offer
    4 bedrooms house of 164.0 m² - Well-planned

    4 rooms house of 164m²

    Avenida Alemania, 445 0001 Los Ángeles, Chile

    1.250.000 $ / month

    4 bedrooms house of 234.0 m² - Cozy living space
    4 bedrooms house of 234.0 m² - Stylish comfort
    4 bedrooms house of 234.0 m² - Your new rental home
    4 bedrooms house of 234.0 m² - Excellent rental offer
    4 bedrooms house of 234.0 m² - Well-planned
    4 bedrooms house of 234.0 m² - Bright interior
    4 bedrooms house of 234.0 m² - Efficient space
    4 bedrooms house of 234.0 m² - Clever design
    4 bedrooms house of 234.0 m² - Ready for rent
    4 bedrooms house of 234.0 m² - Airy feel
    4 bedrooms house of 234.0 m² - Cozy living space
    4 bedrooms house of 234.0 m² - Stylish comfort
    4 bedrooms house of 234.0 m² - Your new rental home
    4 bedrooms house of 234.0 m² - Excellent rental offer
    4 bedrooms house of 234.0 m² - Well-planned
    4 bedrooms house of 234.0 m² - Bright interior
    4 bedrooms house of 234.0 m² - Efficient space
    4 bedrooms house of 234.0 m² - Clever design
    4 bedrooms house of 234.0 m² - Ready for rent
    4 bedrooms house of 234.0 m² - Airy feel
    4 bedrooms house of 234.0 m² - Cozy living space
    4 bedrooms house of 234.0 m² - Stylish comfort
    4 bedrooms house of 234.0 m² - Your new rental home
    4 bedrooms house of 234.0 m² - Excellent rental offer
    4 bedrooms house of 234.0 m² - Well-planned

    4 rooms house of 234m²

    Ruta de la Madera, Coronel, Chile

    1.500.000 $ / month

    4 bedrooms house of 1789.72 m² - Cozy living space
    4 bedrooms house of 1789.72 m² - Stylish comfort
    4 bedrooms house of 1789.72 m² - Your new rental home
    4 bedrooms house of 1789.72 m² - Excellent rental offer
    4 bedrooms house of 1789.72 m² - Well-planned
    4 bedrooms house of 1789.72 m² - Bright interior
    4 bedrooms house of 1789.72 m² - Efficient space
    4 bedrooms house of 1789.72 m² - Clever design
    4 bedrooms house of 1789.72 m² - Ready for rent
    4 bedrooms house of 1789.72 m² - Airy feel
    4 bedrooms house of 1789.72 m² - Cozy living space
    4 bedrooms house of 1789.72 m² - Stylish comfort
    4 bedrooms house of 1789.72 m² - Your new rental home
    4 bedrooms house of 1789.72 m² - Excellent rental offer
    4 bedrooms house of 1789.72 m² - Well-planned
    4 bedrooms house of 1789.72 m² - Bright interior
    4 bedrooms house of 1789.72 m² - Efficient space
    4 bedrooms house of 1789.72 m² - Clever design

    4 rooms house of 1790m²

    Los Ángeles, Provincia de Bío-Bío, Chile

    1.000.000 $ / month

    4 bedrooms house of 588.0 m² - Cozy living space

    4 rooms house of 588m²

    Nonguén, 407 0386 Concepcion, Chile

    1.100.000 $ / month

    4 bedrooms house of 120.0 m² - Cozy living space
    4 bedrooms house of 120.0 m² - Stylish comfort
    4 bedrooms house of 120.0 m² - Your new rental home
    4 bedrooms house of 120.0 m² - Excellent rental offer
    4 bedrooms house of 120.0 m² - Well-planned
    4 bedrooms house of 120.0 m² - Bright interior
    4 bedrooms house of 120.0 m² - Efficient space
    4 bedrooms house of 120.0 m² - Clever design
    4 bedrooms house of 120.0 m² - Ready for rent
    4 bedrooms house of 120.0 m² - Airy feel
    4 bedrooms house of 120.0 m² - Cozy living space
    4 bedrooms house of 120.0 m² - Stylish comfort
    4 bedrooms house of 120.0 m² - Your new rental home
    4 bedrooms house of 120.0 m² - Excellent rental offer
    4 bedrooms house of 120.0 m² - Well-planned
    4 bedrooms house of 120.0 m² - Bright interior
    4 bedrooms house of 120.0 m² - Efficient space
    4 bedrooms house of 120.0 m² - Clever design
    4 bedrooms house of 120.0 m² - Ready for rent

    4 rooms house of 120m²

    unnamed road, 445 0001 Los Ángeles, Chile

    1.200.000 $ / month

    4 bedrooms house of 1756.7 m² - Cozy living space
    4 bedrooms house of 1756.7 m² - Stylish comfort
    4 bedrooms house of 1756.7 m² - Your new rental home
    4 bedrooms house of 1756.7 m² - Excellent rental offer
    4 bedrooms house of 1756.7 m² - Well-planned
    4 bedrooms house of 1756.7 m² - Bright interior
    4 bedrooms house of 1756.7 m² - Efficient space
    4 bedrooms house of 1756.7 m² - Clever design
    4 bedrooms house of 1756.7 m² - Ready for rent
    4 bedrooms house of 1756.7 m² - Airy feel
    4 bedrooms house of 1756.7 m² - Cozy living space

    4 rooms house of 1757m²

    unnamed road, 445 0814 Los Ángeles, Chile

    1.250.000 $ / month

    4 bedrooms house of 400.0 m² - Cozy living space
    4 bedrooms house of 400.0 m² - Stylish comfort
    4 bedrooms house of 400.0 m² - Your new rental home
    4 bedrooms house of 400.0 m² - Excellent rental offer
    4 bedrooms house of 400.0 m² - Well-planned
    4 bedrooms house of 400.0 m² - Bright interior
    4 bedrooms house of 400.0 m² - Efficient space
    4 bedrooms house of 400.0 m² - Clever design
    4 bedrooms house of 400.0 m² - Ready for rent
    4 bedrooms house of 400.0 m² - Airy feel
    4 bedrooms house of 400.0 m² - Cozy living space
    4 bedrooms house of 400.0 m² - Stylish comfort
    4 bedrooms house of 400.0 m² - Your new rental home
    4 bedrooms house of 400.0 m² - Excellent rental offer
    4 bedrooms house of 400.0 m² - Well-planned
    4 bedrooms house of 400.0 m² - Bright interior
    4 bedrooms house of 400.0 m² - Efficient space
    4 bedrooms house of 400.0 m² - Clever design
    4 bedrooms house of 400.0 m² - Ready for rent
    4 bedrooms house of 400.0 m² - Airy feel
    4 bedrooms house of 400.0 m² - Cozy living space
    4 bedrooms house of 400.0 m² - Stylish comfort
    4 bedrooms house of 400.0 m² - Your new rental home
    4 bedrooms house of 400.0 m² - Excellent rental offer

    4 rooms house of 400m²

    unnamed road, 444 0000 Los Ángeles, Chile

    1.500.000 $ / month

    4 bedrooms house of 256.0 m² - Cozy living space
    4 bedrooms house of 256.0 m² - Stylish comfort
    4 bedrooms house of 256.0 m² - Your new rental home
    4 bedrooms house of 256.0 m² - Excellent rental offer
    4 bedrooms house of 256.0 m² - Well-planned
    4 bedrooms house of 256.0 m² - Bright interior
    4 bedrooms house of 256.0 m² - Efficient space
    4 bedrooms house of 256.0 m² - Clever design
    4 bedrooms house of 256.0 m² - Ready for rent
    4 bedrooms house of 256.0 m² - Airy feel
    4 bedrooms house of 256.0 m² - Cozy living space
    4 bedrooms house of 256.0 m² - Stylish comfort
    4 bedrooms house of 256.0 m² - Your new rental home
    4 bedrooms house of 256.0 m² - Excellent rental offer
    4 bedrooms house of 256.0 m² - Well-planned
    4 bedrooms house of 256.0 m² - Bright interior
    4 bedrooms house of 256.0 m² - Efficient space

    4 rooms house of 256m²

    Avenida Gabriela Mistral, 444 0000 Los Ángeles, Chile

    2.000.000 $ / month

    4 bedrooms house of 120.0 m² - Cozy living space
    4 bedrooms house of 120.0 m² - Stylish comfort
    4 bedrooms house of 120.0 m² - Your new rental home
    4 bedrooms house of 120.0 m² - Excellent rental offer
    4 bedrooms house of 120.0 m² - Well-planned
    4 bedrooms house of 120.0 m² - Bright interior
    4 bedrooms house of 120.0 m² - Efficient space
    4 bedrooms house of 120.0 m² - Clever design
    4 bedrooms house of 120.0 m² - Ready for rent
    4 bedrooms house of 120.0 m² - Airy feel
    4 bedrooms house of 120.0 m² - Cozy living space
    4 bedrooms house of 120.0 m² - Stylish comfort

    4 rooms house of 120m²

    Costanera Quilque Sur, 445 0814 Los Ángeles, Chile

    700.000 $ / month

Other property types in Biobio Region