Booked this hotel for its great central location beside seomyeon station, and was pleasantly surprised it ticked all the boxes for us. Excellent service all round, including staff in the sauna where most struggled with english but still tried their best to help.
Just a few points to note:
1) their gym, sauna and swimming pool are interconnected. Hence to get to the gym, one will need to pass through gender-segregated locker/sauna area. Usual procedure is removing shoes at locker room entrance, get prepared for visual onslaught of people walking around in the nude, change into their tee, shorts, socks provided (optional), wear back shoes at locker room exit, before reaching the gym.
2) sauna area includes jacuzzis (3 pools of varying temperature), 1 steam room and 1 finnish sauna room. It also seems to be a requirement to cover hair with towel.
3) for those who are uncomfortable to go nude and only plan to do dry sauna, you can request for a “gown” (bath robe).
4) Their fitness facilities is open to external members so it can get crowded. Hotel guests get complimentary use of these facilities only once a day.
Hope these information would help!