We stayed in Vienna for a few days as a family with three kids. The apartment great! It is spacious, clean, well equipped and located in the heart of the city center, but still in a quiet alley.
The big shopping streets are close by and there are a lot of restaurants, bars and shops in the vicinity.
The contact with the host was good, but the last days before arrival the reaction was slow but it all worked out fine when we arrived.
Unfortunately construction work was going on in the building next to ours which gave us some noise in the mornings.