Josefstadt is one of my favourite neighbourhoods and this place is right in it. Many restaurants and shops around, including supermarkets, and a great coffee place in the same street (Coffee Pirates). It is walking distance to old town, as well as Mariahilferstr., main shopping street.
The studio is somewhat small, especially kitchen, and there should be a few more pots and pans, and maybe a microwave. The only really negative thing I could think of were curtains that were useless as they don't stop at all the light from coming inn very early in the morning. Thicker and darker curtains would be much much better and useful. Apart from that I enjoyed my stay here.