Kitchen sofa Adagio:
1955 x 675 x H 780 mm
https://ivanovo.inmyroom.ru/products/1936783-kuhonnyj-divan-adazhio-bezhevogo-cveta-raskladnoj 
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Without Turbosmooth modifier:
Polys: 7,574
Verts: 7,843
With Turbosmooth iterations 2 modifier:
Polys: 241,936
Verts: 122 153

The Turbosmooth modifier with Isoline Display was applied to the required objects;
There is an FBX file (if necessary, apply the Turn To Poly modifier to the FBX file);
For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of materials is configured taking into account PBR.