Since I’ve already mentioned Ginko, I might as well tell you a bit more about it. It’s a smallish, very cozy vegetarian restaurant that doesn’t have a regular menu. Instead there’s an ever-changing self-service buffet, including soups and salads. Everything vegan is labelled as such, and there’s a variety of international dishes. They even have cakes and other desserts, and as far as I know, all of them are vegan (and delicious).
This is how much food you can eat there for just under 10€, including the spicy coconut ginger soup and Bionade: