Lucie & Markus ' apartment is excellent; you will want for nothing.
Lucie was waiting for at the apartment and filled us in on all the details.
Communication by phone/email was the best.
The photos and description on AirBnB were on the mark.
The light rail station, which easily connects to the highlight of Vienna, is an easy walk (15 minutes). There is also a very good supermarket called Billa at the station open until 10 PM; also several good restaurants and a taxi stand.
It remains our first choice for Vienna.