Corona version 9
The model uses materials that may not be displayed correctly in very old versions of the engine.

Bathroom furniture River:
- decorative slabs of travertine, 1700 mm wide
- mirror
- mixer and button for flushing CEA https://www.ceadesign.it  /
- decorative panel in plaster material (installation), 1200 mm wide

Objects are partially attached, textures and materials have logical names
TurboSmooth is partially open

For Corona render, it is recommended to install a version not lower than 1.5, since the glossiness of materials is configured with PBR in mind.

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