My wife and I were going to rent one of these apartments before we settled on Stuttgart. If you want to stay in Berlin, give these a try. http://www.berlin-aloha.de Click on the photo's to go to a discription of the 3 apartments. They owner has been nothing but nice and accomodating when discussing plans, and in my last conversation, 2 of the 3 apartments were still available. Price is reasonable, not the 100% mark-up I found with others. Good luck.