The apartment is really stylish and well-kept, with lots of thoughtful amenities (the espresso machine, good quality cookware, glasses, etc.). Also the location is great: close to many interesting shops and at the same time walking distance from a lot of interesting museums and excellent public transportation (trams, metro). It is in the inner part of a nice construction (from the Biedermeier period, late 19th century) and therefore really calm (no traffic noise). The space is very pleasant for a couple and may also work for a small family with a child. The kitchen appliances are all well-kept, the sofa couch is very comfortable.
Communication with Christiana is excellent: she responded very quickly to a couple of basic questions we had.
All in all, a five star place for many reasons!