"They should serve free water to people who pay an entrance fee to enter the dance floor. Wednesday the entrance fee is $15 and Tuesday it is $35 to do both the tango class and the dance practice after. I asked for a glass of water at the bar on Tuesday after paying $35 for just being there, and was refused! I was told a buy a tiny water bottle for another $3 instead... I would have needed four of those water bottles to keep dancing throughout the practice, which would have pushed the price for entrance-and-water to over $40, so I just left. It's ridiculous. All the other dance places provide water by either installing a drinking fountain, or by having a couple of water pitchers at the end of the bar or at a side table and a bunch of paper cups for self-serving. Otherwise, the dance teaches and the dance crowds are good. The water attitude of the establishment definitely does not make me want to buy any food or drinks from that bar, though. I was considering buying some food there, but forget it. There are plenty of good restaurants around Mission, if one is hungry or thirsty before or after the dancing.."