Kiki's apartment was just as advertised and had all we needed for our weekend in Vienna, being located conveniently close to the city centre with a tram stop right in front of the house door.
The only negative point was a gas heater in the bedroom/living room, which was a bit noisy at night but it is quite common in old houses of that kind and we still managed to sleep well.
Also, Kiki was a very well-organised, responsive and pleasant host.
Overall we felt very comfortable in this apartment and can recommend it to anyone who wants to explore Vienna for a few days.