You only must to extract the zip file named Cosy Living Room, After that only you need to open the blend file and press Render :D

---------------------------------------------------------------------------------------

Important Info:

This scene uses no more than a 4 GB of RAM or VRAM :D

The render time in my system was around 30 minutes, depends of the camera view.

My specs:

I use a i7 4790 with 16 GB of RAM and a GTX 1060 with 6 GB of VRAM take this into account and compare with your system specs n.n