I stayed in Gudrun's flat for 2 months. When I had a question, which was not often because her instructions were thorough, Gudrun was quick to respond and very pleasant to communicate with. She is a great source for information relating to Vienna. The apartment is just as it is advertised and pictured. It has high ceilings; natural light floods the living and bed rooms. It overlooks a courtyard with a huge three in the middle of it. The neighbors are very quiet; it was a good place to relax and work without disturbance. The location is excellent with a three minute walk to the underground that takes you quickly around Vienna and to the bus network that allows you to see the city above ground. The main train station is about 10 minutes away by either underground or bus, and the airport is about 45 minutes away by underground and trains (less if you take the express train, bus or a taxi). I came to Vienna recovering from a broken foot on a work related project. Gudrun was extremely helpful in making my stay pleasant and workable. The flat suited my needs perfectly. I would return without question.