crank up the lights and turn down the floor bump.
Definitely work on your floor. It looks too wet 
And take a look at this post (and others) to get rid of the white spot you have around the cooking area.
http://www.chaosgroup.com/forum/phpBB2/viewtopic.php?t=18139
Are you sure about the scale? I think the chairs are a bit off and the have a weird reflection on the foot.
Modeling and materials look good. Needs more light.