In the scene there is a Bailey by Four Hands sofa model and two materials of different colors.
https://fourhands.com/product/229133-001 
Size: length = 2490 mm, depth = 978 mm, height = 673 mm.
Sofa, number of polygons: 150,248
Decor (pillows+plaid), number of polygons: 259,475
- Who works in a V-Ray version lower than 3.1, be careful, in the materials in the BRDF section there is a Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward – which is preferable for you.
It is recommended to use version 1.5 or higher for Corona render.