It was a great place to stay (comfortable, easy going) with a terrific smal roof terrace (you can relax and watch stars on a warm summer night, at least that’s what we did). The 4th floor-location is a free workout and it’s really a very quiet appartment, you did not hear anything (and yes, you’re in the middle of Berlin). We hired bikes nearby (see: Berlin on bike) and then the city is all yours. The communication with Manou & Jo was warm and to the point. We will be glad to come back a next time!