First, be a tea lover. Second, be in need of a place to relax. Third......ah yes, that's the feeling. This Zheng He or Cheng Ho (Depends on how Foreign you are) Tea House connected to the museum of the same name is a great place to go to chill out. They have great teas (obviously), which they prepare in old fashion style right before you. The place has awesome decor as well, which is worth a look around if you haven't had your fill of art and the like. Regardless, they'll know what you're coming for when you get there so just sit back and enjoy the tea.