Ribcage sports a number of excellent hot baths just outside of town. These are built over volcanic springs that bubble up through cracks in the stone slopes. The best run of these is The Gymnasium of Steam, run by Shandrala, a tiefling priestess of Sung Chiang.
They offer normal spa baths, and healing baths which are magical in nature, able to cure any disease of the skin. But those customers angering Shandrala are sent to a special spring where the water's filled with toxic minerals, but a victim won't notice the burn immediately because of the soothing temperature.