Vasco is a great host. The flat is not in the city centre but getting to it is easy. If you are coming from the main station, you just take red U line and transfer to green U line and get off at Margaretengurtel station.
The flat is very clean and well equipped. There are two bedrooms. One with a queen size bed and two single beds. There are also two toilets. One with shower
If you are staying for a week or more than that, I recommend this place since there is a laundromat one block away (Europeans don't have dryers in their flat). The location is very convenient since there are so many restaurants around the area and a Billa supermarket across the street. A famous tourist spot, Schonbrunn Palace is also three stations away.
I recommend this flat to everyone who wants a quite location away from the city. If I will visit Vienna again. I will definitely stay here.