3dsmax 9 / vray 1.5
10x for comments
Looks a little underexposed.
You have light leaking out from the fixtures and hitting the ceiling.
-there is tiling pattern on the floor tiles
-the wood mapping on the stair treads and risers seems odd, maybe too small…IMO it looks weird to have hardwood flooring look on the stair risers (vertical faces.)
-is anyone else noticing sort of banding effect on some parts of the walls?
10x for comments
floor tiling - in real life have real tiling ( i can post photo 
) i know looking bad … but this is real
next render will be better 10x