Really a nice apartment! Martina was a great host. She greeted me when I arrived and handed over all the extra keys for my 2 colleagues. The apartment is spacious and well located near the University and the Friedrichstr. station. The kitchen was great and the balcony was really a nice hangout place. Qualms: The third room was in fact the living room (e.g. is it a two bedroom flat and not a three bedroom as advertised on Airbnb) which was not ideal but worked out nicely anyway because the place is so spacious. :)