I have been before and had a decent time. I am a bit bigger than most Koreans, but average for a white guy. Today I went at 3pm on a Sunday. I was told that I was too fat, that I was not allowed to enter (by the owner). I calmly and politely explained to him that I had been there seven other times when in Seoul. He said there was a policy change!!! I am actually 12 kg leaner than the first time I went nearly a year ago. Fine, there are other places with more traffic to visit that cost less. Still really insulting.