The flat is really centrally located so it was easy to walk to many of the major sites and having the beautiful Tiergarten on our doorstep was wonderful over a hot weekend. The cycle cafe next door was great for breakfast as well. The flat was spotlessly clean and had everything we needed. The bedrooms are all very light and had good storage for 6 of us. There is only one bathroom but that was fine. The open plan living room and dining room was big enough for us all to hang out after a long day exploring. Very comfortable sofa and chairs! The views of Berlin from the living room windows are great - no high rise buildings so you feel a sense of space. Heinz responded quickly to any enquiry I had, and the check in/out process was really smooth. My friends left their suitcases at the office before check-in was ready which was convenient. We had 3 sets of keys which was also good for a large group. I would recommend staying here for a trip to Berlin.