Sven has thought of everything! The apartment is spacious, incredibly clean and in an amazing location-within walking distance of the central station and multiple metro lines- as well as many shops and restaurants. He is very responsive and even had someone meet us at the apartment to show us around when we first arrived. While we had very comfortable weather, there were fans in every room, just in case it got too hot. The kitchen is well stocked with everything you need and a grocery store is just around the corner. He has posted a very helpful map of the neighborhood for reference. We would love to stay here the next time we are in Berlin.