I created most of this interior in about 2.5 days and adjusted minor details like the pillows on the couch, decor on the coffee table and a few tweaks to the lighting which took a few of hours spread out over a couple of days.
I am actually really happy about how quickly I was able to produce the first render, considering none of the objects nor materials in this scene were in my library before I started this project (all assets were downloaded for free from Design Connected, Turbosquid or 3DSky).