We had great experience in an apartment located in an excellent area, very close to the metro station.
The apartment is very spacious and quiet in a nice neighborhood.
It was very clean and very well equipped and included a washing machine and detergent which helped us organize with the clothes we brought.
The hosts went out of their way and bought us featherless bedding.
Since there were no guests coming in right after us, the hosts allowed us to leave the suitcases in the apartment until very late on the day of departure.
We highly recommend the apartment and if we return to Vienna we will be happy to return to it.