nice room!

just some suggestions for you to test.

if you didn´t render with gi/fg I would consider to render a ambient occlusion pass and composit it in photoshop. this might improve the "flattness" of the objects, if you know what I mean. you could also try and use a hdri to light the scene in combination with final gathering/mental ray. this enhences realism in lighting.

good job so far!


___ edit


also you might try to use some specular maps on your objects. this would break up the homogenious look of all surfaces in your scene.