Jonny and his mother Elisabeth are for sure the best hosts that I ever meet before in Airbnb.
The house was very clean, it's a quite place, everything was functional, the neighborhood is great, you will find plenty of restaurants and supermarkets around the corner, there is a bus stop literally in front of the house, a shopping mal and a metro station 5 min by walk from the house.
I stayed with my family for a couple of weeks and definantly recommend this place for any one that is looking for safe and great place to stay in Viena.