Still work in progress, I decided to change my render engine to cycle, the internal was taking way, way, way too much time rendering it. I even fix the top window weird black color by using cycle, so simple
and fast!
I remove the compositing because it's slightly different with the cycle render engine.
Took me about 10 min rendering with a Nvidia Geforce GTX 570M, Which was not mine and I should work faster if I still want to render on it.
I used the plug-in G'Mic for GIMP to remove the "Hot Pixels", they we're a lot of these pixel.
I still want to add a palm tree behind, I've been experimenting some tree with arbaro, not really succefull riight now...
Version 1:
https://cgcookie.com/blender/images/concept-hallway/
Version 2:
https://cgcookie.com/blender/images/hallway-scene/
I will be deleting these at my final render.