I had lunch here on a Sunday, this place was super busy, long lines of locals waiting to be seated. This definitely told me something, this place is either good, or is either good!
Family operated and located in a not so touristic area, you will understand why this is a spot to visit, as soon as you enter the place, it is warm and you can smell the magnificent food being prepared in an open kitchen where cooked are moving very quick in order to accommodate the crowds.
Once seated, they will offer you the house wine, and you pay as you consume, very dangerous idea by the way. The food was absolutely amazing ,prices are very reasonable and especially on Sunday since they offer a lunch menu with even lower prices.
If you are in the Hamburg area, go see this place and order the Dorado fish, grilled with some tasty roasted potatoes, very very good place!