They have very authentic Bavarian (not German!) food and environment. Wich means stay away if you don't like meat. Beer is good, service is mostly okay, paying the bill soemtimes takes long.
Only problem is they are by far too expensive and if you can't baoxiao you better go to Schiller's or Schindler's Tankstelle. In case you can baoxiao it's fun watching the huge crowd.