The cocktails here are mostly water. Which actually isn't all bad, since the waitstaff at the rooftop bar won't actually give you a glass of water. We were told to go downstairs to buy bottled water from the restaurant. 70-90 rmb for terrible cocktails and pretentious service. But the rooftop is a nice spot by the lake, and the beers aren't expensive. Beer is probably the way to go here.