This space is in the absolute perfect location for any visit to Vienna. It is steps from the subway and central to any place of interest, restaurant or cafe in Innere Stadt. We were able to easily walk to any location from the Naschmarkt to the Donaukanal.
The space itself was clean, well equipped and very comfortable. There are plenty of outlets and amenities if you plan to stay in the room for longer periods of time. The space is reached by a fairly small elevator (not common elsewhere, from our experience), so travelers with heavy bags or multiple bags may want to take that into account.
All-in-all, this is a phenomenal place that will make your visit to Vienna much easier and worry free.