When we moved to Frankfurt, there were very limited options for vegans in the city, so it was nice to visit a place where they at least know what "vegan" means and don't cook any meat.
But the vegan options are still limited, most taste good, but it's nothing exciting (they don't even make the lasagna vegan). Thus, know that we have a lot of great places to go, there is no real reason to eat there anymore. Still, most of the food is really tasty, just nothing that really makes me leave my own kitchen ;)
When we are in the area we normally want to grab a bite before going to the movies and decide to have a Falafel ("Aroma", best falafel in town!, way down the street) or a Curry Sausage ("Culux", also have vegan burgers and great fries, just a few houses down the street).
Updated from previous review on Thursday June 06, 2013
Cons: Small portions, A bit expensive, Not always a nice atmosphere