[Internet: fast, Sockets: many, some right on the table. Average visit: 1-10 hours. Cons: sometimes they close for private events without warning]
Best working cafe in Berlin. Period. Good coffee, lunch on offer, and no overwhelming music. Bright, spacious interior makes for a very nice environment. Coupled with plentiful access to power and chilled out staff makes this a standout location for working with your laptop.
The only drawback is that they occasionally close without warning for private events.
BASE_camp: Mittelstraße 51, 10117 Berlin (U Friedrichstrasse).
Opening hours: Monday-Friday: 10:00 – 20:00, Saturday: 10:00 – 18:00.
Size: Huge, many tables with access to power