The flat is lovely! It's on the ground floor of a historic building (up a few steps) in a courtyard away from the road. The two bedrooms are large doubles (one ensuite) and both the bathrooms are fantastically well appointed. Any problems are solved by Emil (who also lets you in to the flat) who is the charming agent.
We have been spoiled in our last few airbnb properties with the gift of a few provisions (milk etc.) on arrival: as we arrived on a Sunday and all the shops were closed this would have been a nice touch here.
The u4 u-bahn station is no distance away from the flat.
It was a wonderful, warm place to stay on our trip to Vienna. Thank you!