The place is nice, very well located between several metro stops and close to the prater. The place is comfortable and there was coffee and tea available. There are also lots of information booklets and a Vienna guide book, which is super thoughtful!
The only downside to the place were the blankets: these are too short for anyone over 1,70m, and you need to choose whether you want your feet or shoulders covered. The blankets are also very thin, so in winter you have to sleep with the heater on high and the windows closed to keep warm. For the rest, a very nice place.