Alright no one's taking credit, but here's what could be done with something like that.
It's set up like a 40's style hotel, great atmosphere and the perfect look.
Incorporate that into a virtual 3D world like
Red Light Center (Utherverse) but make it a film noire kind of town with a Sin City ambiance. Or at the very least in Red Light Center you can walk into this part of town where the HookUp Hotel is.
So you enter the hotel and it's 40's style, other people hanging around in the lobby etc., and a series of interactions leads you to the existing interface on the hookuphotel site.
So it seemlessly goes from the 3D world to the interface to see the real girl etc.
By itself its pretty cool, but i would bet people would really get off on entering a virtual world like that.