We had a great time at Oliver's place. The apartment was really nice and had everything you need when staying in Berlin for a few days.

The area is good, just off of Schönhauser Allee with lots of places to eat, drink and shop. Schönhauser Allee U and S-bahn stations are just a couple of minutes so it has good connections to the airport and the various parts of the town.

I'd definitely recommend staying there to anyone looking to explore Prenzlauer Berg.