Happy Day is a sports club and jjimjilbang complex located in Seoul Gwangjin-gu Jayang-dong, presenting a fitness club, golf facilities, a sauna, and jjimjilbang. A special feature of is its hotel-grade facilities with waters provided by a sulfur hot spring containing geranium and alkali. The grand facility’s main charcoal sauna sits on the 1st floor basement with separate men’s and women’s saunas on the 2nd and 3rd floors respectively, an exclusive women’s jjimjilbang on the 4th floor, and an outdoor aqua therapy facility situated on the 7th floor roof. The women-only jjimjilbang boasts a pinewood sweating room and ice room, along with an all-natural aqua therapy pool on the 7th floor. Aside from these facilities, Happy Day also offers rock-climbing health equipment at its fitness club as well.