The flat is very nicely decorated in a modern and warm style. Everything is well designed, there's room to put the clothes, the living room is spacious even with the sofa bed unfold, you can actually cook in the kitchen... It was great to enjoy a first breakfast and the great coffee every day.
Daniela's been very helpful each time we needed her (booking, booking change, parking advice,...) and is very responsive.
Location is great. If you want to enjoy Schonbrunn, you can walk to it, if you want to go to the center, U line is reached in 10 minutes or so. There's a supermarket a couple of streets away as well.
It's been an excellent first experience of airbnb and Vienna :)