Osnat's place was spotlessly clean, pleasant & comfortable. The location was very good. It's walking distance to the old city (15 or 20 min.) as well as to many central locations. The tram, U (underground/ subway) & train station leading to the airport are all a short walk away & a bunch of grocery stores are in the 5 min. radios. Osnat was available & helpful before & throughout our stay. When in Vienna in the future, I'll be happy to stay in one of Osnat's apartments again.
A note to Kosher observers: The location is ideal as it is surrounded by the kosher shops & restaurants.