In the scene there is a model of the corner sofa Edwin and four materials of different colors.
https://www.divan.ru/product/divan-uglovoj-edvin-velvet-light 
Size: length = 2600 mm, depth = 1560 mm, height = 900 mm.
Sofa, number of polygons: 71,394
Decor (pillows + blankets), number of polygons: 197,270
- 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.