When the sun's been up since 4am, 7am coffee dates are completely rational. Blackout curtains don't do it for me so coffee is usually the first thing I'm thinking about in the morning. Distrikt is one of my favorite coffee spots (maybe behind Pastelaria A Galão, Weinbergsweg 8, 10119 Berlin). Their pastries (croissants!) are delivered fresh every morning around 8:30am, there's free wifi, and their indoor seating rivals their sidewalk spots on Bergstraße.
Distrikt Coffee (Bergstraße 68, 10115 Berlin)