My friend and I decided to try something new because we had a groupon. It's a really fun experience if you've never tried a spa before. I'd even go back without the groupon. Because I didn't know what to expect, I will say if you have a problem with nudity don't go. The first floor is separated by sex however, so you wont find naked people on the coed floor.
Besides that, I had a great time. I would recommend the clay ball room as my friend and I had the most fun in that one. Make sure to put your butt in first so you don't slip and fall.
They also offer towels, toiletries, and spa clothes so you aren't sweating in your own stuff. I did bring my own sandals, and I'm glad, because the floors can get super hot in the saunas.
I will say the food looks overpriced. I'd just go to chinatown if you want korean food. But the staff is pretty friendly and they seemed helpful. I plan on going again.