Great apartment, located next to station Thaliastraße (only 5min. walk), and 25min. walk from the center of Vienna. Matthias communicated with us in less than one hour, and he was flexible with our early arrival.
There was always hot water to have a shower.
The only disadvantage is that there is only one key, that opens both the building's door and the apartment's door, so we don't know if someone else (who has also the building's key) could enter to our private apartment.