Communication with Gert was straight and clear before arrival.
The place is in a great area, you will feel like one of the locals. We have visited touristic areas and wanted to get out from there and go back to Kreuzberg as soon as possible, we felt that that's the real place to be if you want to take the pulse of the city.
Saturday market just around the corner. Heating, wifi (which was enough for us to get in touch with the ones home and search for some info), clean, safe, close to U-Bahn. More than enough for our weekend break in Berlin.
Thanks Gert.