I think it's the floor that's not working out too well. The green isn't working too well and the red in the centre isn't really working either IMO. I think it's because it's a really busy texture and that it's so light. Maybe use a variant of the green in the middle and put some spec on the existing stuff?
I think the busy texture actually works in the theatre area, but that you need to play around with your lighting in there a bit. It's pretty bland at present. What about dimming it a bit and using trim lighting on the floor and stairs?