For a hotel/city level to become truly interesting, it should have a large varity of content and be orintated around PvP (Player versus Player). Most of the hotels I've played have just been rooms set up with warps, treasure mode'd and almost no real activities.

Edit: I actually once played a city level hosted in CTF mode to enable teams, and the two teams being cops and criminals. You could collect coins by winning various activities and use them to buy weapons, rooms, and more activities. It's on my old burnt down hardrive I'm afraid though.