We had booked this apartment but the host sent a message to say there was a problem with the apartment and offered a last minute alternative. This larger apartment was excellent, larger than the one booked and down a quite cul-de-sac in a nice part of Vienna.
As compensation for the change of location, the host gave us complementary tickets to a concert at the Musikvervien. This was such a generous thing to do and the highlight of our trip.
Communications were excellent and we got tips on the locality and transportation.
All in all, a great experience in one of my favourite cities.