If you're in Berlin with a small family or (like us) a group of coworkers, this is a very good place to stay at. John and Niklas were helpful via messages, the place is very well equipped and about 15-20 minutes of public transport to everything.
Sidenote : This is a calm and out-of-the-action location, no noise after 10pm, avoid if you like all-night discussions during summer nights.