Spas with reservation required

Napa Valley, California

A moderate-priced day spa in Napa Valley open most afternoons and evenings, catering to solo travelers and couples.

The Hamptons, New York

Adults-only destination spa and 12-room retreat in Water Mill, offering hydrotherapy, yoga, spa treatments and overnight stays by reservation.

Berkshires, Massachusetts

A solo-focused skincare studio in Lenox offering one-on-one facial treatments with natural, eco-conscious products by appointment.

Atlanta, Georgia

A moderate-priced day spa in Atlanta open seven days a week from 9am to 9pm, serving solo visitors and couples.

Boston, Massachusetts

A walk-in friendly day spa in Brookline near Boston offering massage, waxing, laser and other treatments, closed Mondays.

The Hamptons, New York

Day spa on Montauk Highway in East Hampton offering facials, massage, nails and waxing, open daily 9am–6pm since 2003.

Carmel-by-the-Sea, California

A hotel spa inside Carmel-by-the-Sea's Hyatt Regency Monterey property, with hydrotherapy, sauna and a relaxation lounge for guests and couples.

Naples, Florida

A moderate-priced day spa in Central Naples offering facial and massage treatments, open daily except Sunday from 8am to 6pm.

Seattle, Washington

Spa Noir is a dark, moody day spa in Seattle's Belltown neighborhood, open daily from 11am or noon until 7pm.

Bordeaux, Nouvelle-Aquitaine

Hotel spa at Palais Gallien in Bordeaux offering Nuxe skincare treatments built around the brand's signature Huile Prodigieuse, open daily by reservation.

Naples, Florida

A hotel spa inside the Inn on Fifth in downtown Naples, open daily for massages, facials, nail services, sauna, steam room and lounge access.

Palm Beach, Florida

Upscale hotel spa in West Palm Beach for adults and couples, open daily 10am–6pm with reservations required.

Los Angeles, California

A moderate-priced day spa in Central LA open daily from 10:30am to 9:30pm, offering massage and walk-in or reserved treatments.

Denver, Colorado

Day spa in Greenwood Village offering massage, facials and lymphatic drainage treatments, open daily with reservations recommended.

Denver, Colorado

Day spa in Denver's Lowry Town Center offering massage, facials and a relaxation lounge, with robes and sandals provided for guests.

Glenwood Springs, Colorado

A day spa in a converted brick house in Glenwood Springs, open Thursday through Monday for massage and spa treatments since 1998.

Hot Springs, Arkansas

An 1889 bed-and-breakfast across from Hot Springs National Park, with in-room whirlpool tubs for two rather than a communal bathhouse.

New York City, New York

A basement-level day spa in Manhattan's Chinatown offering massage, facials and foot reflexology at affordable prices, open daily until 11pm.

Seminyak, Bali

A day spa in Seminyak offering massage, beauty and hair treatments, open daily 9am to 11pm with walk-ins or reservations.

Nashville, Tennessee

One-esthetician skincare studio in Franklin, TN offering facials, dermaplaning and microcurrent treatments by appointment.

Aachen, North Rhine-Westphalia

A suite hotel in central Aachen where each private room has its own jacuzzi and sauna, booked by the night rather than a day pass.

San Francisco, California

A Lower Haight day spa in San Francisco focused on scalp massage and hair-health treatments, mixing Asian head-spa methods with European techniques.

Los Angeles, California

Ayurvedic day spa in Santa Monica offering four-hand massage, Shirodhara and herbal body treatments by reservation, adults and couples only.

Seoul

A head-spa focused Korean wellness studio in Mapo-gu, Seoul, open daily 9am–9pm with moderate pricing and reservations recommended.