Beautiful, classy place in the middle of the city. Everything is nearby - coffeeshops, grocery stores, transit and more. A 15 to 20 minute walk gets you to lots of great spots. (Uber will get you there too!)
The apartment is just as described in the photographs. Be sure to look at the layout on the site. As others have said, they warned us about the 5 floor walk up, but it's worth the hike. (If you have any knee problems, you probably ought to pass on this one.)
When I found out this place was run by a management group, I was a little skeptical. However, those who manage the place were just as responsive as any private owner managed place I've stayed in. Easy to work with and quite attentive.
If you want a place in Vienna in the middle of everything, look no further.