Location was perfect. Communication was quick. Place was definitely sufficient for what we needed it for. Perfect for our few days stay in Vienna.
There was construction happening within the building but that didn't bother us too much. I did read some reviews about the long passageway so I was prepared. I was with my husband on this trip, so I didn't feel scared but I understand why others have said they felt a bit scared if I was alone.
The downside if I had to be picky is the bathroom window is on show for all to see, so there is a lack of privacy from places above. Also, the bed is very squeaky and the pillow was rather lumpy.