Communication with Caroline is clear and straightforward. Her 1 bedroom apartment is centrally located ad tastefully decorated. It is within a short walk from Rennweg train station (S train from airport, much cheaper than CAT airport train!) and tram/ underground stations.
I really like the neighbourhood and nearby Belvedere gardens/ palaces.
The only downside is that the apartment block is having an external decoration at the moment... it will be nice to have a breakfast starter pack as Vienna's convenient shops do close quite early on sunday.