My cousins and I stayed at Martin's place for three nights. From the beginning, communication with Martin was excellent. Upon check-in, he provided us with several great recommendations for food, nightlife, and tourist spots. He really does know Berlin! We took his advice and had an amazing time! The apartment itself is very spacious with three really comfortable beds. Overall the apartment was very clean and really well taken care of. For a studio apartment it is quite open and airy and has plenty of space for everyone. The train stop is around the corner from the apartment and all the major tourist spots are within walking distance. You cant beat the location, the quality, and the price. We will most certainly be visiting and staying here again. Many thanks !