The house has moaned for 300 years—it is Europe’s oldest and most famous by-the-hour hotel. Twenty suites are available for a minimum of three hours to fulfill your most secret desires. The names of the suites—Africa, Angel & Tiger, and Emperor Suite—are part of the fun: In the latter, Emperor Franz Joseph rendezvoused with his mistress. Everyday people as well as politicians, aristocrats, and movie stars all book rooms under false names—after all, love is democratic.