I stayed with my family for five nights, and we had lovely stay. The place is spacey, modern, equipped with all necesary amneties and more. You can really feel like home.
There are no neighbours, cause the building is in the industrial area.
Just a son of the owner lives in the same building. The area is very quiet.
Even the view is ok, you can see nice city landscape in the distance.
The is free parking on the premises, wich is very cool when you're in a city where you'll spend 20 to 30 euros per day on parking, regardless of the area of Wien.
To conclude, I highly recommend the place. You will get excellent value accommodation, especially if you travel by car.