Xiaolan's apartment is fairly new and located in newly developed area. It's very close to the Hauptbahnhof and Belvedere palace. Despite being close to a major train station, the apartment is soundproof and we barely heard anything when all the doors were closed. The apt has AC but it was a bit tricky to set (though we couldn't find the vents? We think it might have some sort of fancy wall cooling system). Xiaolan was very responsive and quick to help with any questions we had. Check-in and check-out were straightforward. Our favorite feature was the balcony, overlooking the city and rail tracks. The apt was missing some minor amenities such as hand soaps, hand towels and bath rug/mat but overall, we really enjoyed our stay. We definitely would stay here again next time we're around.