I would recommend this accommodation. We were an adult family group of six 30- and 60-somethings. This apartment gave us room to spread out, yet stay connected, as we came and went during our stay in Vienna. The apartment was very clean, but did show some wear and tear. The bedrooms are all upstairs, with one full bathroom on the lower floor, and one room with toilet and one room with shower, upstairs. Two bedrooms had what I would consider queen size beds and one bedroom had a full size bed. We were rarely there, except to sleep. There is good air conditioning in each bedroom, which we needed only one night. The street level entry hall/elevator is unkempt, but as I got comfortable with the neighborhood, this was no longer a factor.
This apartment couldn't be better situated. It's half a block to the U-Bahn stop and we could walk to the center of the city in 30 minutes. There's a grocery across the street and wonderful restaurants within easy walking distance. We found great Thai, Italian and Austrian food nearby.
This apartment was very adequate for our stay and we enjoyed our visit very much.