Maria was very friendly and the room/flat was really good. Everything was clean, all the equipment we needed (pots, pans, towels, sheets, etc.) were there and it was very comfortable. Maria was also very flexible concerning the check-in and check-out and answered really quickly as soon as we had a question. She made it very easy for us to enjoy our stay!
With the local bus/railway-station the main parts of Vienna are very easily accessible and it never took us long to get somewhere.
All in all, would recommend :)