In the popular Rosenthaler Platz, this cafe is a popular meeting spot for local entrepreneurs, creative business types, and students. With its outdoor seating, it's also a great place for people watching.
The coffee is good, and like most cafes in Berlin you can also get a beer on tap (bier vom fass). It's a great place to visit in the afternoons or even for a light lunch. If there aren't any tables, don't be afraid to ask if an empty seat is free. It's a very communal cafe.