We've spent 5 nights in this apartment. It is located in a very upcoming neighborhood of Berlin. In a walking distance one can find cool Bars and restaurants. The train station is in about a 10 min walking distance but the tram station is across the street.
There were small issues with the apartment wich were very quickly and efficiently handled. I must say I was amazed from the kindness and the ability of the team and especially Martina to listen to our problem.
We flew back on a Sunday evening. We should have left the apartment on Sunday morning, but as there were no guests coming this day we were allowed to use the apartment the whole day without extra charge.
I would definetly recommend the apartment.