The scene contains a model of Beryl's couch and four materials of different colors.
https://www.divan.ru/product/kushetka-beril-velvet-beige 
Size: length = 1620 mm, depth = 980 mm, height = 920 mm.
Sofa, number of polygons: 184,609
Decor (pillows + blanket), number of polygons: 216,408
- Who works in V-Ray version lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whichever is preferable for you.
For Corona render, it is recommended to use version no lower than 1.5.