When I stayed in Stuttgart this past summer, I had a few bad experiences staying in a few less-than-great Airbnb situations. Some where too far from any good public transport or sites, and some didn't have the best oversight. Sven's place was the polar opposite, a fantastic place right in the heart of the northern part of Berlin, just a few minutes' walk from tons of shops and restaurants, and right near a tram and S Bahn station. Berlin was a much better stay in Germany for me than Stuttgart, and Sven's place was one reason why--great city, great place, great host, and I recommend them all. :)