Katarina's flat was perfect for our quick getaway to Berlin. It was right across the street from the S, which made it very easy to get anywhere in the city. Upon arrival, Katarina's husband greeted my husband and I and took our bags up the stairs. The flat was nicer than we expected; very clean. Katarina even left out supplies to make coffee in the morning! The flat is on the top floor, so be prepared to climb about flights of stairs to get to it as there is no elevator. Since it is on the top floor it was very private and quiet. Also, there is not a traditional shower, so be prepared to bathe. There is a movable shower sprayer though. All in all, we really enjoyed our stay and would return if given the chance!