An excellent house if you want to visit Vienna.
Awesome location. 2-4 minutes to closest metro station and tram stops, 10-15 minutes to Stephansdom, the heart of the city. And staying practically in the center you are in a really quiet area, where you can sleep without any noise from outside. Closest supermarket in few minutes (but it is closed on Sundays, like most other Vienna supermarkets). The appartment is well equiped with everything you might need, and on our first evening we were already considering it as our Vienna home.
The hosts are nice and responding, always on contact and very helpfull.
I surely can recommend this appartement for your visits to Vienna