Located across the street from the Opera house and Burggarten garden, next to Karlsplatz subway and above ground tram line, with plenty of cafes close by, 011 Boutique Hotel was a perfect choice for my short visit to Vienna.
This is an older building, but the contemporary lighting, wall art, and new upscale bathroom, gave it the unique ambiance I always look for in a hotel. Plus, reception was very friendly!