Sanctuary on Camelback Mountain, Paradise Valley, Arizona $$$$
Concierge.com's insider take:
Perched on the north slope of Camelback Mountain (which looks just like it sounds), the Sanctuary attracts big-name celebs and travelers who favor a chic, modern aesthetic. It's hard to find much to fault here—from Elements restaurant, headed up by an Iron Chef winner, Beau MacMillan (whose farm-fresh American menu is tinted with Asian influences), to the indoor-outdoor spa with its reputation for having the city's top therapists. Couples visiting the spa should book a few hours in its inner sanctum: an open-roofed, circular structure of stacked stone with a private Jacuzzi, shower, daybed, and massage tables for two (cost for four hours: $125). Guest rooms show contemporary design touches like brick walls and stained concrete floors. We especially love the Spa Casita Suites for their outdoor soaking tubs and living-room fireplaces. Sanctuary is so sufficiently spread out that even when all 98 casitas are full, it doesn't feel crowded. If you're traveling in a small group, think about renting one of the houses around the property—prices start at $2,000 per night, and all of them have private pools (one even has a private tennis court).