This is a really nice little cafe right next to S-Bahn station Lichterfelde-Ost so it's perfect if you are waiting for a train. We went there today and there were two vegan soups, vegan ice cream, smoothies and baked goods such as vegan croissants on the daily changing menu. There also where vegetarian quiches and pizzas, unfortunately not vegan. The owner is a very friendly guy who is eager to make your stay as comfortably as possible.
Prices are a bit on the expensive side, though. A plateful of soup was 4,5€ for instance, but it's all organic and freshly made.