ok the middle one is the best out of the three but it's still not right by a long shot. Look at where the kitchen "ends" there is a sharp contrast between the floor where it's light and where it's dark. That wouldnt happen.

Have you got any lights lighting from below? to simulate bounce light? that's why everything is so dark. Can you post a wireframe pic of your lighting setup in the scene and we can take it from there. Also up your antialiasing renders look crap with it turned down.

Alan