The scene contains a model of Dinen's sofa and Pip's cushions by divan.ru, 6 material variations:
Dinen Barhat Blue, Dinen Velvet Coral, Dinen Velvet Gray, Dinen Velvet Yellow, Dinen Velvet Ocean, Dinen Velvet Beige. Overall dimensions ~~ 219x94x95 cm. The model has the correct geometry and UV-mapping, texture maps and materials with unique names.

Manufacturer's website: https://www.divan.ru/ 

For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of the materials is adjusted taking into account PBR