wow, you are not just getting good, you are good
I really like the realism of the images, and the last with the dark wooden wall has so much potential to become superb render. Sofa models are a bit crappy, maybe if you could replace it with a better model, something with fabric material and some clothes hanging over sofas...
Maybe you should make a simple tutorial. How you set up your materials, lights, render settings, etc...
Again, nice work.