I would absolutely suggest choosing Chiao's accommodation for a lovely stay in Vienna.
The house is typical Viennese, in close proximity to all the important monuments. The area is quiet, with a lot of nice restaurants and cafes. The house is well-located among supermarkets, trams, bus station etc, making it a perfect location for a "Vienna experience".
As for Chiao, she is absolutely one of the sweetest, friendliest, and most amazing hosts I had the chance to meet.
Thank you so much for hosting me :D