The flat is in a convenient location between Westbahnhof and Schonbrunn. The very centre of Vienna is just a few short stops away on the U Bahn. The flat is a good size and very clean. The beds are very comfortable, always reliable hot water and heating. The kitchen had everything we needed.
The host, Josef, was very responsive to any questions or requests. Check in and check out were both very straightforward and, with the self check in option, very convenient for those arriving at unusual hours.
We would definitely stay here again when in Vienna.