Koubai Onsen is a Japanese neighborhood sento in Osaka, close to Umeda, Tenma, and Minamimorimachi. Its tiled bathhouse, decorated with lion ornaments, holds a shallow pool, a deep pool, a bubble bath, an electric bath, and a cold bath. It opens at 2:30 PM and runs until midnight, and the sauna is about 92 to 96 degrees Celsius. Towels are not provided, and shampoo and soap must be brought separately.