Maria is a model host - super friendly, helpful, answers inquiries immediately.
Location is awesome. If you don't know Vienna, it's on the border of Josefstadt (one of the most attractive neighborhoods) and Ottakring (one of the hippest). Right near the Gürtel (beltway), which is convenient, but you don't hear it, and the views are either of the inner courtyard or of a cathedral, not the Gürtel itself. Walkable to the Ringstrasse (15-20 minutes, depending on you) without having to deal with all the tourist hassle.