A very good place.
First off, easily accessible from the airport - it takes approximately thirty minutes from the airport to the door, just take the S7 and stop at Wien Praterstern.
Secondly, very cozy and clean apartment, we had everything we needed. The bed is also very comfortable which is a big plus.
Thirdly, the city center is also easily accessible, for example with a tram.
We really enjoyed our stay here. Thank you, Dragi!