This is a hot springs outside of Seoraksan National Park located in the basement of a hotel with the same name. There is no jjimjilbang – only the segregated hot springs baths – so you get only towels and not jjimjilbang clothes.
The locker rooms are the standard and there are some snacks and drinks available but no restaurant since there’s one upstairs in the hotel. There is a skin-scrubbing area inside the baths, but no massages or other services unless perhaps they are somewhere else.
Inside the baths, there is a large seated shower area but only a few standing showers. The water is nice; it is easy to tell the difference between "regular" water and hot springs water once you've been to a few saunas and hot springs. There is a hot bath, a hinoki bath, some massage baths, a warm/kids bath, a cold bath and a cold waterfall bath, a steam room, some saunas and a small heated floor area to rest. It’s clean, and the water is really nice feeling! However, there is not a lot to do here except soak, so this is not an all-day type destination like a big jjimjilbang would be. There are also not likely to be many, or any, foreigners, at this place. It was only us when we went.
To get here: From Sokcho intercity bus terminal, you could just take a taxi. If you say Seokcho Oncheon, it will be around 5,000 won, about 6 km/15 min.
By city bus is a little trickier from the bus terminal - it's best if you are on the north side of Sokcho, near City Hall. The link below for Korea wikia on this area states that you can take bus 3 or 3-1 from Sokcho. I found info on both #3 and 3-1, which pass by the Sokcho Ferry Terminal/East Sea port, City Hall, and Dongwoo University on their way to the Cheoksan Hot Springs.
강원 속초시 노학동
Gangwon-do, Sokcho-si, Nohak-dong
Open 5:30 am ~ 9:00 pm *NOT 24 hours!
Wikimapia of Cheoksan Hot Springs*
Very few details are available for this listing yet, and the satellite image is a terrible, cloudy one so far. Let's hope a new one will be available sometime soon!
Some additional links to keep you busy:
Travelguide South Korea - post on Sokcho Beach Area
Korea's Wikia on Two Cheoksan Area Hot Springs