We were looking in the window to see a menu - it was all dark inside. Unfortunately this restaurant was closed on the Monday evening we showed up.
However the owner came out saying sorry it was his day off and asked what kind of food would we like so he could give us a few recommendations. We said an Indian would be nice - he gave us step by step instructions on how to get to a family run place nearby - which turned out to be bloody good!
He didn't have to do that and we would love to give this place a try the next time we're in Berlin!