Hi,
Firstly, I'd say play around with your camera, the viewpoint looks a little high and angled too far down in my opinion, it might be nice to see a bit of ceiling and lighting. Maybe add a feature pendant over the dining table. The single IES light scallop on the wall is strange, as if there's only one spot light in the ceiling. Also the sofa's are letting the scene down, they look far too blocky.
Overall though it's a good base but it looks flat, needs some post-production work.
Good luck, keep us updated on your progress.