Just off the top of my head, you should try adding a few different lights, add a strong directional light like you have with ray-traced shadows, (small light angle and bump up the number of rays I think), add a fill light with low intensity to relieve the really dark shadows (shadows are seldom so dark), add a "rim" directional light from behind maybe to make it pop a bit more. I would add some minor detailing in the furniture and walls, add baseboards and maybe an electrical outlet to break up the wall a bit. The handle looks a bit boxish and harsh.

Lots of stuff you could add, just some thoughts, but it's definitely improving!