Ahn's apartment is beautiful - large, bright, airy, prettily decorated and spotlessly clean. Ahn was a great host, she waited patiently while we took longer than we should have done to work out the train route from the airport, and everything was perfect and ready to use. The apartment is in a very central location, with U-bahn and S-bahn at the end of the street, walking distance to major interchanges, and the iconic TV tower just a few streets away. The street itself is attractive, with pretty bars and shops, and a supermarket just around the corner. As the weather was quite hot, we very much enjoyed the balconies for getting some air. We were also fortunate to be there the night Germany won the World Cup final, so there was much celebration around us! I would highly recommend the apartment for a stay in Berlin.