Generally, I had a positive stay in this apartment. It has some pros and cons. The flat is quite small and the kitchen is basic. The shower and the toilet could be improved. Tv set didn't work or I wasn't able to make it work. However, the flat was clean and the bedroom/living room was large enough and lightly. The atmosphere is nice, a bit retro and fashionable. The price is in line with what you get.
A super plus is the location, super close to the metro, the tram 18, Billa supermarket, the Danube channel and parks. Very smartly located if you want to move rapidly and save time during your visit in Vienna. Remember to question in case you need thicker or harder pillows, and don't forget your sleeping mask if you are annoyed by the morning light :)
There was no feedback, contact or communication with the owner but everything went smooth. Mattress was very good!
Eventually I had fun and it was ok.