SpaTerre San Diego
Hotel SpaSan Diego, California
Adults-only hotel spa at Kona Kai Resort on Shelter Island with six treatment rooms, a couples' suite and day-pass access for non-guests.
$$$
Spas with private suites
4 spas match
The Spa at Encore Las Vegas
Hotel SpaLas Vegas, Nevada
An adults-only hotel spa inside Encore Las Vegas with whirlpool, sauna and steam room, open daily for treatments and day passes, walk-ins welcome.
$$$The Spa at Mandarin Oriental, Boston
Hotel SpaBoston, Massachusetts
A luxury hotel spa in Boston's Back Bay with a Crystal Steam Room, Vitality Pool and private couples suites, open to adults 18 and over.
$$$$Four Moons Spa
Day SpaEncinitas, California
Adults-only day spa in Leucadia, Encinitas, about a mile from the beach, with private suites, a relaxation lounge and movement classes.
$$$
