The apartment is perfect: the location, the equipment, the space, the tidiness ... The beds are perfect. The kitchen is brandnew and well equiped. The 7th district is really nice: in the city-center (but just outside the most busy areas) with nice restaurants and pubs.
Christiana is the perfect host; she is very helpful and answers immediately.
We didn't use the sauna: it was too hot in Vienna this time. So... we have to come back in winter to try that one. And if so, we would immediately book this apartment again.
We really can recommand this apartment!!!