Immersion suites—the ultimate amenity for well-being—are popping up at resorts across the globe. At the Guanahani (590/590-276-660;; doubles from $820) on St. Bart's, the Wellness Suite comes with an ocean-view terrace and after-hours access to the adjacent Clarins spa pool. ● In the three Rejuvenating Spa Suites at Los Cabos, Mexico's Las Ventanas (888/767-3966;; doubles from $2,300), your own spa butler will lead yoga sessions and whip up healthy elixirs. ● The Grand Hyatt Erawan Bangkok (800/633-7318;; doubles from $576) has six spa cottages— with Thai-massage beds and outdoor showers—designed by Tony Chi; they sit above the hotel in a rooftop garden. ● The Renewal Suite in the Westin Times Square (800/937-8461;; doubles from $1,500) helps soothe frazzled senses with a chromatherapy infinity tub and decompression chamber. No need to eat or drink outside your room: the mini-bar is stocked with organic wines and vitamin-infused gummy bears.

Westin New York at Times Square

The Westin New York at Times Square is something of a beacon of calm and respite in one of the world's most bustling landscapes, complete with a beam of light soaring from the atrium to the top of the 45 story building. Dashes of copper and blue accentuate the glass building, while inside, the 863 rooms provide a peaceful reprieve. Rooms are painted with light colors and decorated with abstract art of a muted palette. The real draw of the Westin, though, is inarguably its location; just blocks from the hotel are 40 Broadway theatres, 5th Avenue shopping, Grand Central Station and, of course, Times Square.

Las Ventanas al Paraíso, A Rosewood Resort

Grand Hyatt Erawan Bangkok

Located on Rajdamri Road, the Grand Hyatt Erawan overlooks the city’s famous Erawan Shrine and is convenient to shopping at Siam Paragon and a BTS Skytrain station. The atrium area is enclosed by a glass ceiling and is decorated with pieces from the hotel’s modern art collection. The property houses 380 guest rooms and suites, each with residential furnishings and warm, neutral linens; plus, many have large windows offering views of the city. On-site Spasso serves Italian fare, and traditional Thai cuisine is available at Erawan Tea Room. The i.sawan spa houses nine treatment rooms, a nail bar, and a fitness center.

Le Guanahani