We very much enjoyed our stay in Klaus's flat. The flat is very comfortable - bigger than we expected from the photos, and well-equipped. It was also spotlessly clean for us to move into. As the advert says, it's a bright flat - plenty of natural light. There is good double-glazing, so the flat is quiet and also warm over the winter. The flat is on the third floor, with a lift. It's only a minute or two's walk to Nollendorf U-Bahnhof, which makes it very easy to get around the city. There is an Edeka supermarket on Nollendorfplatz, plus an Al Natura organic supermarket, and plenty of bakers etc around all within a couple of minutes' walk, so everything is more or less on hand. The flat also has a small balcony with a table and chairs - as we were there over winter we didn't use the balcony, but I imagine it would be good to sit outside there in summer. In addition, Klaus is a great host - very friendly, full of good suggestions and quick to respond to questions.