Chair Nika:
500x605xH865mm
Impala table:
1800x900xH750mm

Polys: 101 040
Verts: 52476

You need to apply the Turn to Poly modifier on the OBJ model;
Turbosmooth modifier with render iters mode applied on the required objects;
There is an OBJ file;
For Corona render it is recommended to install a version of at least 1.5 since the glossiness of materials is configured with PBR in mind.