This nice little write-up describes a tavern in the City of Shiran. As always, it is embedded beautifully into the setting, with little details that bring it to life and a few adventure hooks thrown in.
This is no ordinary tavern. It lurks unmarked in the cellars of a warehouse, but is popular with local working folk and with members of the nobility who have a taste for low-life and blood sports for the Bull Ring boasts a combat arena in which dogs, rats, cocks, badgers and men fight. Fighters can make good money, if they survive victorious, and of course betting on the outcome thrives.
The normal residents of the building sound decidely unpleasant types, indeed the entire tavern is ripe for clearing out by decent and upstanding citizens. If your party, however, has more disreputable tastes they may find it a suitable watering hole and a place to make useful contacts.
There is a page of descriptive material about the tavern and what transpires there, floorplans and room descriptions and four hooks to get the party involved with the place.