I'll start from this, the trip to Vienna was planned on the same day so the communication was very fast and we were lucky to find this place. The location of the apartment is in a central place and you have everything near you (supermarket, pharmacy, restaurants .. you name it). although its a self checking we arrived earlier and we met Peter (Jasmin spouse) and he gave us a quick tour on the apartment and the area, more than that, throughout our staying he gave us info and answered our question regarding the area and when to leave to airport and where we can go with the kids, and he is a great interlocutor.
Regarding the apartment, first it has a lot of space and it was the most organised and tidy apartment I ever stayed in, the AC was marked on how the temperature is best set, the shower tap was marked on the best hot/cold balance, the washing machine had been marked as well on how to use it and in overall, we had a fantastic time there.