Thank you for nice words, your comments are really helpfull and I really apreciate your critique and suggestions.
As for time efficiency, I always think that I waste a lot of time and work extremely slow. Maybe this is because my first ever employer, after one year of collaboration, switched to chinese firm, which provides final images in one day:) I don't have enough commercial experience, to tell the truth from that time I had just few projects and thats it, all projects in my portfolio are personal, so I always asking myself how much time should I spend and how much should it costs. Is there any "regular amount of time" for one render?
-And once again about the floor, same problem here, I always trying to lower reflection, but at some point it looks dull for my taste and you see the result. I will try to do it right next time(I know I already told this, but I have some progress:) ). And you are absolutely right about the bump.
-I see that it looks a little weird, but it was "the best one" from all my attempts, always struggle with backplate and postproduction.
-There was a referenced image for this project and I had to match the angle, but seems like I did it a little wider. One more time the same problem. Will try to pay more attention to this. I already read some articles about interior photography and watched several tutorials, but seems like not enough.