Hi our stay was very pleasant. We stayed as 2 people but the flat was big enough for 4. We satisfy with flat was clean and useful. We did not use the kitchen since we stayed only one night but it was fully equipped. It was close to u-Bahn couple of minute but we decided to walk to centre and it takes about 20-25 min by walk. Katarina helped us during check in we did not face any problem. She shows us a high welcome she was very helpful, incredibly kind and friendly. It is very important to have some make you feel secure. Helped us the start a good stay in Vienna.:)) I highly recommend this place when you consider the price.
The only small issue is there isn't a tv at the flat. But again since the price was fair that did not bother us.