We had a great start at Karsten's. The space was just as described and provided us with a very relaxing home base while in Berlin. The water pressure in the shower is great and the bed is very comfortable. His communication was quick and polite, too. A great place and host. The only drawback was on our first night we could smell cigarette smoke coming form somewhere, perhaps from a neighboring apartment or outside. It didn't appear again though during the rest of our stay. (For reference, we were there Thursday - Sunday)