Great appartment, near to vienna's city centre. Tram and regional train's stops are literally by the building. The appartment is well equipped: blankets, towels, shower gel, Wifi, tv, hair dryer, toaster, kettle, coffee maker, pans, cutlery, etc... All you need for your stay!
The only negative point was the staff. I never met them basically. They ask you for your chec in time, but I got the place in Vienna, and no one was there. After sending emails, and calling (several times until I managed to speak to someone), they just ignored me. After a while, I got a call from a person (who even didn't introduce himself) trying to give me a code for opening a leter box; however call quality was so poor, it took me a while to understand him. Finally, noone explained to me howvto check out, so I basically leftthe cardkeys in the apartment and left.
To sum up, it's great appartment, I recommend it, but bear in mind your phone's battery and international roaming charges!!