A 24-hour jjimjilbang within walking distance of Seoul Station. Its bathing pools are filled with germanium mineral water drawn from 300m underground, and the kiln sauna and traditional steam rooms are a genuine dive into Korea's unique communal-bathhouse culture — with a food court, sleeping room, and even a PC bang on site, you can easily spend half a day here for very little money. It also doubles as a cheap overnight option for late arrivals or early departures.