Very practical flat, really ideal for families. We were 5 during our stay and could live and sleep confortably thanks to the clever layout. The check-in and checkout was done autonomously, and the instructions provided were clear enough for everything to go smoothly :-)
The flat is very close to tram line 43 which enable to reach the city center and the whole public transport network in ~15 min. It's been the perfect place to visit Vienna :-)