We really enjoyed our stay in the apartment and it was a great location to explore a fab city and also to hang out in the Charlottenburg area and around the river. We were two adults and two kids (13 and 10) and it was very comfy for all of us. The location is excellent and the apartment was about an hour from the airport and 30 mins from centre of Berlin. It is very close to u-bahn (about 5 mins walk) and also good bus connections. It is also handy for a day trip to Potsdam which is well worth a trip from Charlottenburg Station.