I usually go here for weekday work lunches. The restaurant is small and clean and comfortable, totally unpretentious and relaxed. The food tastes a dinner my grandma would make, and I find myself craving cafe Berlin at least weekly.
The nurenburger with spaetzle and sauerkraut is my go-to lunch favorite, but the rahm schnitzel and bockwurt with red cabbage are also pretty amazing.
If you don't have to go back to work, enjoy a beer with your meal, and don't forget to save room for the amazing strudel.