Mattam's edit is a good suggestion. Honestly, I didn't even notice that some of the other stuff in there is quite nice because the floor was so overpowering.
What's up with the shadows halfway down the walls, though? (And on the top for that matter.) If they're straight walls, there shouldn't be any shading. Right now, it looks like the walls are bulging out. That's not too bad, it gives me a kind of sci-fi vibe, but when it's used on the doors as well, something seems off.