Had a one night stay last weekend. Hotel is in a great location for those coming & going via Vienna's train station and is really only about 3 minute walk outside, if you walk from the eastern train platforms to the hotel. There are no ticket gates for platforms, so you can use platform 1 to walk from the main area of the station all the way back to the far exit, close to the hotel. Google doesn't correctly show the walk, but start here at the back end of the station and you'll see a pedestrian cut-through once you're outside that further reduces the walking time.

Hotel itself is nice although my room showed some age. There was a stained couch and rug, the couch stain looking recent and not thoroughly cleaned by housekeeping. In some ways, the hotel struck me more as a Centric than Andaz. Breakfast was good although less variety of food than I expected. Sadly, they eliminated the happy hour I had read about (& was looking forward to) but it seems like all the hotels are getting rid of these, unfortunately.

Overall, I had a good stay and the hotel is certainly worth point redemption as a Cat3.