I haven't read any of the feedback on this thread so I might say the same thing as others..maybe completely different.imo the visuals are too different.. first of all the scale is too big in places for example ceilings are too high. I do not like the yellow walls or the checkered floor, replace them with a more orthodox or less eye catching texture... looks more like an optical illusion than a corridor haha! The detailing is very good in places.
edit: what is with the levitating blue stairs that contrast humorously with the yellow walls? I commend you for using new textures for realism.. but then there are some unrealistic parts of the aesthetics that really throw me off. Either way it is clear you have spent allot of time and effort so far on this, are you still developing it?