Great apartment!
The main advantage for me is underground parking, which is accessible directly from the building. You have to pay for it separately, but that is great option for Vienna.
Nice location, very quiet, 2 min to tram station, 5 min to subway station, 30 min walking to city center.
The flat is very clean, cozy and comfortable, has everything you need for a long-term stay. Great terrace! Also it has mini-bar so you can buy some beer or local wine, which is another great option.
Claudia is perfect host, she left detailed instructions how to reach the apartment. You can use self check-in/check-out. In my case she met me to help with parking.
I can definitely recommend Claudia's apartment!