Koh Rong Archipel., Cambodia

Song Saa Private Island sits in Cambodia's Koh Rong Archipelago in the Gulf of Thailand, its two islets locally named "the Sweethearts." Wellness here takes the form of a "spa with no walls" — rather than a single central facility, treatments happen in a series of individual sanctuaries scattered across the island, from an overwater sala where guests can listen to waves lap below them to a jungle-clad treehouse and a hilltop sanctuary reached through the forest. The spa philosophy draws on the Buddhist practice of metta bhavana, the cultivation of loving-kindness, and the treatment menu is organized around three corresponding themes: stillness, healing and blessings. Every stay begins with a private consultation with the Head of Wellness, who builds a bespoke program combining spa therapies, nutrition guidance and island activities rather than handing guests a fixed menu. Practitioners include traditional Khmer therapists, internationally trained wellness experts, yogis, reiki masters and meditation guides, drawing on both ancestral technique and more contemporary modalities. Signature treatments lean heavily on foraged, local ingredients — the Khmer leaf compress, for instance, uses tamarind, lemongrass and basil gathered by the resort's in-house botanist and turned into nourishing oils — and guests can also request a monk's blessing as part of their wellness journey.

S$900–S$2,000/night

Siem Reap, Cambodia

Shinta Mani Angkor, designed by Bill Bensley in Siem Reap's Royal District, treats wellness as inseparable from the natural bounty surrounding Angkor's temples. At its center is Khmer Tonics Spa, a sanctuary built around Chbab Boran, the ancient Cambodian law of healing, using indigenous botanicals and time-honored ritual to address what the resort calls the "Angkor Ache" — the fatigue that follows early starts, humid temple treks and thousands of steps across the archaeological complex. The spa combines traditional Khmer healing rituals with more contemporary wellness techniques, positioning recovery as an essential second half of the guest experience rather than an optional add-on. The treatment menu spans relaxing and deep-tissue massage, rejuvenating facials and soothing body scrubs, built around all-natural, hand-crafted spa products. The signature Shinta Mani Massage pairs aromatherapy with focused technique to relieve stress and encourage deep relaxation, and guests can also book detox wraps, couples treatments and combined spa-and-lunch packages. For those staying in the resort's Bensley Pool Villas, an added layer of privacy is available through exclusive in-villa treatments — a poolside facial using cold-pressed organic seed oils, an alfresco foot therapy session after a day of temple trekking, or a rooftop massage set to birdsong. Wellness at the property extends beyond the spa itself. A well-equipped fitness center sits next to the spa for guests wanting a workout, and the nearby Siem Reap River promenade offers a scenic stretch for those who prefer to get their cardio outdoors. The hotel also folds cultural and community-minded experiences into its broader wellness identity, having originally been founded as a nonprofit hospitality school for disadvantaged Cambodians — a legacy that still shapes its emphasis on training and purpose alongside relaxation. For guests wanting to extend the reset further afield, Shinta Mani's sister property in the Cardamom Mountains offers a multi-night rainforest retreat combining yoga, meditation, chi-gong, sound bathing and guided breathwork, which can be paired with a Siem Reap stay for a longer wellness-focused itinerary.

S$350–S$600/night