Had a very good stay at Gili's place. The apartment had everything we needed and was very clean (the bar of chocolat he left behind was a nice touch). The communication before and during our stay with Gili was clear and easy.
From the apartment, it's a short walk to the U-bahn, from where you have easy acces to Alexanderplatz. And in the neighbourhood there are enough bars and restaurants if you want to keep it close to home.