Hotel really well located, in city center, close to shops.
Staff was friendly and check-in process was fast.
However, we expected more from a 4-star hotel: room was nicely decorated but quite small and windows not that big, making the room a bit dark. However, bathroom was good and new.
In terms of comfort, noise isolation is not good and pillows were too thin.
I would classify it as an average hotel but would not recommend it since I have been to much better 4-star hotels in Vienna also centrally located.