We stayed here for 6 nights, June 10 through June 15, 2013. The location, a block from the Opera and the Karlsplatz Ubahn station, couldn't be better.
The apartment we had (407) was spacious and comfortably appointed, with a bedroom completely separate from the rest of the apartment. Climate control was the best I've ever had abroad, with separate... what people say » (and effective!) controls for the bedroom and living area. The kitchen had all the necessary equipment and a very nice breakfast nook. (There's also