Is there a limit to how decorated the brothel rooms can be? I find it kinda confusing when it goes from Reah's empty jail cell to Vaande's vaguely average room all the way to a full-blown kitchen replica that you can temporarily work in.
The entire brothel is just a giant holdeck. It's actually just a black 20 ft. cube filled with dildos.
The actual answer is: however decorated/elaborate the girl wants to invest in. Reaha's a special case since she was sort of being chained up and forced into it.
I was very excited for a second. The possibilities were limitless. Filling 20 cubic feet from floor to ceiling with nothing but dildos sounded amazing.