Its a very nice mental ray example. With all of these my main complaints are how clean it all is, flat as well.
I really like the window and the slight light that comes from it. The tile floor is lost here, it seems to have no depth also looks like its that fake decrative linoleum that just looks like tile and doesn't have any groves.
Also that clock in the back doesn't seem to have any reflection. The wood around it and the front should be getting something from the surrounding area. Some with the picture to the left. Is that a wooden fridge? If not the shine is off on that as well
the wood cabnets texture is repedative, make sure its not streaching either, hard to tell. But if anything, break it up a bit by creating some more textures just slightly different.
Over all the lighting is nice, and as a learning peice, its a good job.
However, it needs more to break it away from just a nice example of mental ray FG if you're going for something more than that.
