The apartment is well located, right next to the subway Keplerplatz. So it's really easy to get to the center or anywhere else. It's easy, too, to do all the shopping you'd like, from food to shoes or clothes...
I didn't see Kevin, because he was in Stockholm, so I got the keys from a friend of his, but the communication was really nice and easy, even during and after the stay.
In the apartment, you'll find everything you need to cook, wash your clothes and sleep in a quiet environment. Wifi works very well, too.
On the other hand, the shower isn't very easy to use and, overall, it wasn't very clean, but I didn't have to pay the cleaning charges, so it was ok.
I still recommend the apartment, especially for a short stay in Vienna. The description is accurate.