Me and a friend stayed for one night at Ursula's place, and she was a great host! We arrived a little later than expected, but she made no problem of it and made sure we could get inside even though she was not present at the time! As it was only a one night stay, we did not see much of each other, but when we did Ursula made sure we were both satisfied with the room and gave us some tips on where to go.
The location was very nice, there were multiple buses and trams that could take you to the centre or station, and the street was filled with nice cafés and restaurants. I will definitly consider Ursula's place again if I ever return to Vienna.