Food is not that great and expensive to places like Schiller's or Schindler's. But you should not go there for food but for cakes and bread. It's for sure not the best German restaurant. Sitting upstairs is quite cosy on a Sunday afternoon (at least with a cake). Cakes and bread are also not really cheap but also really good. Could be they have to import part of the ingredients. Kempi Deli is better but also nearly 50% more expensive.