As you exit the subway at gate 1, you'll see the Samjung Greencore Apartments (삼정 그린코어) and a sign for the Greenvill Jjimjilbang entrance.
This sauna is clean and warm, with the usual hot, cold, and warm baths and showers. The jjimjilbang is also standard; central TV area, ice room, a few hot dome shaped rooms, and the cafe/restaurant. It's definitely nice enough, and has separate sleeping rooms for men and women. The DVD room is a good, dark place to relax as well.
To be honest, I only stayed over here one night and have been unable to find their website, if they even have one. As a result, I am unable to quote all the current costs. Daum had the most information and Naver only has a weak listing. There is one review on Daum in which a person rated her experience as only 1/5 stars. It seems she had an isolated bad experience there with some man last year. Strange things happen to everyone once in a while.
I stayed again on my most recent trip to Daegu, and I'll tell you guys this. I'd spend the money, time & effort to sleep just about anywhere else. When I entered I got 2 discount tickets reducing the rate from 7,000 per night to 6,000 and even that didn't get me to come back. Firstly, I was reminded how most rooms are just too warm for me to sleep comfortably. Then I noticed the lack of sleeping mats... that's right - you have to pay an additional 500 won (~$0.50) for a blankets (really just a large tightly-woven towel). This is the only thing you can get to sleep on or under, and it's not enough. And, a small thing, but all the showers are just one fixed temperature... a decently warm one, but still, only one.
It's an alright jjimjilbang for a day visit, but, don't sleep here unless you want to wake sweaty and stiff & sore.
대구 중구 남산2동 665번지
Daegu, Jung-gu, Namsan-2-dong 665
Open 24 Hours
Jjimjilbang Adult: 7,000
Wikimapia of Greenvill Jjimjilbang