Maria was a fantastic host. She gave me very clear instructions on how to reach the apt from the airport. Although Maria was not available she left her key with a neighbor and everything went very smoothly. The apt is a beautiful studio in the heart of vienna with easy access to the Ubahn. Two stops from Vienna international center and 4 stops from stephansplatz. Towards the end of my stay I did meet with Maria. She is a very kind and gracious host.
She had absolutely no problems in contacting Airbnb to reimburse me for the extra day I had accidentally overbooked.
Overall it was a great Airbnb experience: clean apt, well-located with an exceptional host!