Michael was really hospitable, with a nice map with the highlights and some tips waiting for us on arrival. The apartment was clean, big, and in good conditions (as shown by the pictures). The apartment is only 2 minutes away from the U5. Across the street is a nice bakery/cafeteria for some nice breakfast or lunch.
I went to Berlin with three friends, most of all for the (techno) parties. We went to Tresor and Watergate, both within 3,5 K of this apartment. The club area is really close to the apartment, so when you go to Berlin for the techno experience this is the best apartment for you. Please note that there is no club closely to the apartment so no noise disturbance.
When I go back to Berlin (what I will definitely do), I will come back to this apartment. I really recommend this place!