We had a very fun stay at Theresia's house with my sister. The house is located in a very beautiful residential area, which is very well connected to the public transportation and very easy to get to by trams and busses. The room we stayed in was really warm and cozy, it even had a small kitchen in the corner. Also, Theresia welcomed us very nicely, and was a great hostess. If you are to visit Vienna, I would really recommend this place.