Sipping chilled martinis poolside, draped across a whitewashed deck chair, the breezy air whispering over you as beads of sweat gather beneath the rim of a shady sun hat, you stir. Squint a little and, because you're at the San Carlos Hotel, you can almost imagine Mae West basking beside you. Given a time machine and a little luck, this scene might be possible, because this historic downtown landmark once attracted poolside visits from famous folks like West and Cary Grant. The pool, three stories in the air, is as past-era perfect as the hotel itself, which features celebrity suites named for the legends who once slept in them. A night's snooze starts at $115 and, while prices vary with the season, a dip in this historically glamorous swimming hole is always gratis.