The gambling den is unlicensed, but regular bribes to the Constables mean it is usually unmolested. Smoke, quiet conversation and the endless movement of money. What could be finer?
Noisy when it's open. Noisier when someone forgets to bribe the Constables and they stage a raid. But the conversation's good. Allows three cards in your hand. [Using this will change your current lodgings to your Rooms above a Gambling Den]