My list in no particular order.
-Renting rooms to spend the night
-Gambling mini game
-a lot of different beverages to purchase completed with a drinking mini game and a drunken effect making the screen blurry or something similar.
-a cellar, either just a simple whine cellar or for the more vile clubs a cult cellar where dark magic is practiced in secret or murderous gangs of bandits plan their next heist