Martin's place was very comfortable and everything was clean and tidy. The apartment was serviced during our stay which was appreciated.
The apartment has very good links transport links, with two train stations only a few minutes walk away. There is also a small supermarket nearby and an excellent craft beer bar a short distance away.
It is within walking distance of Potsdamer Platz and the museum Topography des Terror.
Martin was a very helpful host, communicating with us promptly. He spent time informing us about local services. He allowed us to checkout later because we were catching flights later in the day.