We have been using Airbnb for six years now and this is the best apartment we've stayed in. The space itself is huge, grandly proportioned, beautifully furnished, amazingly quiet, and perfectly situated: it's only a 10-15 minute walk to the monumental inner-city tourist centre but the neighbourhood is quiet and remarkably unpopulated compared to any comparable capital city I've encountered. Every amenity is provided, the kitchen is pefectly equipped if you want to eat at home but there are excellent restaurants (especially Asian ones) within an area of about 200 metres. We ended up walking everywhere and only took one taxi in the course of a six-day visit. For any family or group visiting Vienna, Ysabel's apartment is a must.