Me and my friend spent 3 nights in Ursula's apartment. The place was really nice and clear, but most important Ursula was always available, even on What'sapp, to help us with all we needed. She has also helped us when my friend lost his bag and she also called lost&found service to help us when we left.
The place was really quiete and the room big. We slept really well and the place is in a very good position to visit all the main attractions that are in Wien.