Hongdae Happy Day Spa is located on the ground floor of the three-story Gyusudang Wedding Hall located between Hongik University Station and Hapjeong Station. The ground floor has separate sauna rooms for men and women, spa facilities, and locker rooms. The second and third floors have oak tree, salt, red clay, oxygen, and charcoal sauna rooms, as well as an ice room. Hongdae Happy Spa has a restaurant, a snack bar, an Internet café, a fitness club, and a massage room that is open 24 hours a day. Ever since the spa was featured in a popular Japanese magazine, it has become a must-see tourist attraction for many Japanese visitors.