Good to see you fixed the scale on the floor. First of all, I would recommend just taking off all materials, so that we can just look and the geometry and composition of the scene. Maybe find a way to show the floor also because the lines on it will have a huge impact on the composition.
So, first thoughts, the floor looks good, I love the quality of the reflections on it, (although I think they could be toned back a tiny bit), but it feels a bit flat. It looks a bit like there isn’t any bump mapping, or specular/roughness mapping. I think just adding a bit more variation could do a lot. Maybe a bit of dust would help to. Maybe a much more toned down version of Blenderguru’s dust tutorial.
The glass on the table feels a bit like it’s floating. Maybe a few more noticeable brackets wouldn’t help a lot.
The pillow on the couch feels a bit off. I think it’s the sculpting. I think it needs to be a bit less thin, and sculpted less like it’s been beat up for hours at a time. The couch looks decent, but the pillows on the top don’t match the bottom very well (and could also use a bit of creasing), and the material seems to me like it should be more of a leather material. Do you have reference for what you’re trying to achieve?
Everything else is looking pretty good to me. I like the over exposed look of the exterior (although maybe it should be brought down a little bit?).
My last thing, what is supposed to be the focus here, and what kind of person lives here? Focus first. I’m seeing several points of focus. First there’s the couch, second there’s the table, third there’s the fireplace, and lastly, there’s the chandelier. I’m personally attracted more to the table and the fire place because of their extreme contrast against everything else. I would just try to figure out exactly what you want the focal point(s) to be, and make it work based off of that.
Now, who lives here? It’s a bit hard for me to tell, because there isn’t much stuff here, but it looks to me like it’s someone of the mid-middle class. The house it’s self looks to me like it belongs to a family (especially the quality of the floor seems like that to me), but I’m not sure that everything else follows that. The couch seems like it should be facing a TV or something, but it’s so close the wall, and it looks like on the far end that it’s being covered up by the fireplace, so that that doesn’t make much sense. The chandelier seems more like something that someone who’s fairly rich would have. I guess mainly what I’m trying to say, is that I don’t think all this furniture really fits in the same type of architecture. Try to come up with a character who lives here, and then base what they have on that person, and I think you’ll be more successful.
Anyway, it looks good, and I can see a lot of improvement since some of your older work. I hope this was helpful.