Köstlich

it's vegetarian-only and there's always a vegan choice too. I think, it's become very popular and seems to be quite full of people whenever I pass it at lunchtime. the food was very good, you get to choose from two menues, soups, salads and they have dessert too. you get bread and water for free. there's also a little bio-store inside.
I think it's a cute restaurant. just very small. the employees are extremely nice and courteous.

the portions are good, soup costs 3, 90 per bowl and the main course will cost you 5, 90.
nothing too innovative or out of the ordinary will get served here but the food is delicious and made by people who seem to like what they are doing and appreciate their customers.