Ulrike messaged me quite a few times before our trip to arrange transport to the apartment, which I found really helpful. Her directions got us straight to the front door of the apartment with no difficulty.
The room was exactly as described, we loved it! The bed was so comfortable, and Ulrike's flat in general was huge and fabulous! I really appreciated all the tourist leaflets that were in the room, and the map that Ulrike gave us about the surrounding area. The only criticism I would have was that we would have liked more information about central Vienna itself; we were a bit lost when we arrived into the city, but that may have been due to the tiredness from all our travels :-D
The apartment was about 15 minutes, from what I remember, outside the city but the public transport system in Vienna is excellent so this wasn't really a problem.
Ulrike is a lovely and generous host - she really made us feel at home, and even baked lavender buns for our last morning. :-) I would definitely recommend a stay in Ulrike's apartment.