Lovely apartment, as described, clean, spacious and calm - we slept like babies :) Location is very good, 2 minutes from U-Bahn (where you can find grocery if needed), walking distance to Mariahilfer Strasse. Generally, if you don't mind walking, you can reach the city center on foot (as we sometimes did). Communication with Adriana was great, she and her friend Christof are both super-helpful. We would totally recommend this apartment and host to anyone considering visiting Vienna, we felt like at home :)