The place was perfectly located, I was travelling with my parents and the only thing I can complain was the lack of elevator (which is more than comprehensible, and it's still just one floor).
The place is really stylish, the room was extra comfortable for 3 people. The kitchen was fully equipped. We were also able to do laundry and the location is perfect to explore the whole of Vienna.
Would definitely stay here again, seeing that the place was perfect and both Sonja and Roman were very helpful with everything.