PENTHOUSE SUITE, CAVALIERI HILTON, ROME
As sexy as: Gianni Agnelli driving a Ferrari 250 GTO.
Titillation factor: The whirlpool tub raised on a plinth to provide a direct view of St. Peter's.
Size matters: 7,000 square feet, on the eighth and ninth floors.
The seduction: Clearly aimed at billionaire voyeurs with plenty of enemies (the terrace is monitored by CCTV and rimmed with bulletproof glass—it is Italy, after all), the Cavalieri's penthouse roof garden has some of the best sight lines in Rome. Linger under the gazebo and then duck into the suite for a glass of wine and a cigar (there's a personal humidor and private cellar here, to be stocked with a custom-picked selection of vintages). Go ahead, put your feet up on the sofa that Karl Lagerfeld had in his pad in Paris. Mind the cigar smoke, though: You don't want to smudge up any of the artwork on the walls—those Warhols are irreplaceable.
The tab: $8,998 per night

Cavalieri Hilton
Tel: 39 06 3509 2031