That's how every host should be, like Diana & Robert: helpful, but discreet and concearned in every detail in order to assure a perfect stay in their apartment.
The neighborhood is calm, quiet, clean, the apartment is close (2-3 min by walking) from a public transport station and 15 min by walking from Schonbrunn. The backyard is nice, with beautiful plants and no street noise at all. Inside everything is sparking clean and you can find anything you could need. The apartment has also a little balcony. We were very excited by staying at Diana and Robert and we can't thank them enough.