This is a great place, clean, simply furnished, with everything you need.
Lisa was friendly and accessible. She wasn't there very much, leaving the whole apartment to me, which I didn't mind at all.
The neighborhood is close to public transport and it's easy to get into the "innere Stadt." The immediate surroundings are not particularly pretty and the neighborhood and building can be a little noisy in the early hours of the night, but only if you are sensitive.
The bathroom has no door (the shower does have a door), which I found strange. But then I was alone in the apartment most of the time, so it didn't matter.
I recommend this place and Lisa as a hostess.