We had a lovely stay at Gudrun's apartment. It's in an excellent location - within walking distance to all the big sights, and not far from the U-bahn: Stephensplatz and Herrengasse. The apartment itself is clean, spacious and looks exactly the same as the photos! Both the bed and sofa bed are very comfortable, and we felt safe in the area the entire time. If however, you enjoy a lie in, there is a church right next door whose bell chimes every fifteen minutes between 7am to about 10pm - which can be quite loud if you have the windows open! Aside from this, we had an enjoyable stay. Gudrun was a responsive host, very welcoming and greeted us when we arrived. We would definitely stay here again!