We had a very good stay in Josef's apartment during our week-long stay in Vienna. The apartment is updated and meticulously clean. It is very well equipped and comfortable.
We found the location to be very convenient. It is an easy walk to the underground station, grocery stores and a few restaurants. Two fantastic parks are also a short walk away -- Augarten Park, with its interesting history, and Prater Park, an amusement park with a great Ferris wheel.
I recommend Josef's apartment!