We went there just one or two days after the opening and enjoyed a tasty (yet too salty) meal consisting of veggies, tofu, peanut sauce and rice (for 4€) as well as a fresh fruit smoothie (around 2,5€). The staff was very friendly but partly the communication was a bit difficult because they didn't speak much German or were quite hard to understand.
The interior was quite nice for a bistro (also the outside seating area) - the only annyoing thing was the TV on the wall constantly running.
Oh, and they should learn that vegetarian also means no seafood!
Cons: Not 100% veg*