We stayed at Axels place for 2 nights. The apartment was very clean and we felt very comfortable.
The location, for us, was incredible! lots of shopping and restaurants all around but still not crowded makes the place perfect. subway is very close and with a 15 minute walk you arrive at mall of berlin.
communication with Axel was very easy. He replied fast and is very easy going. we will definitely come back to axels place and we can totally recommend the place.