One&Only Wellness Retreats: Luxury & Lasting Wellbeing

Guerlain Spa at One&Only Aesthesis

Proudly home to the very first Guerlain Spa in Greece, One&Only Aesthesis on the Athenian Riviera sets a new benchmark in transformative wellbeing. Here, the iconic French beauty house brings decades of research, expertise, and elegance to the shores of the Aegean, blending nature’s most precious ingredients — from healing bees’ elixirs to rare orchids — into a refined symphony of care.

Every One&Only wellness retreat here begins with deep personalisation: a sensorial journey tailored to your individual needs, from indulgent facial and body rituals to signature massages that echo the rhythm of the sea. Treatments are immersive, restorative, and undeniably glamorous — whether you’re tapping into the skin-renewing powers of the multi-sensory Massage Journeys, or enhancing your glow at the flawless Glamour Studio.

The synergy between Guerlain and One&Only is seamless, united by a shared commitment to sophistication, innovation, and joy. Together, they invite guests to slow down, surrender, and reconnect — not just with beauty, but with the essence of vitality itself.

One&Only Spa at Kéa Island

Spread across three serene levels, with an indoor-outdoor pool that shimmers like a dreamscape, this mind-expanding Spa forms the heart of one of the most soul-nourishing One&Only wellness retreats in Europe. Rooted in the ancient Greek concept of sophrosyne — a harmonious balance between mind and body — each treatment draws from both elemental land-sea energy and modern holistic science. In partnership with esteemed aromatherapy brand Subtle Energies, the ReSet programme “focuses on restoring balance, easing anxiety and resetting circadian rhythms,” while ReEnergise “aims to detoxify, strengthen, combat adrenal fatigue, and support immunity.”

Guests are encouraged to align their stays with a rolling schedule of celebrated visiting practitioners, with sessions ranging from Reiki, chakra balancing and gong healing to Cycladic stargazing and pioneering medical frequency biophysics. Sundays take on a different rhythm at the Bond Beach Club — a secluded cove where live music and open skies invite spontaneous dance and creative movement. It’s a space that inspires true release: a departure from routine and a return to self. As with all One&Only wellness retreats, the emphasis is not only on healing — but on evolving.

Chenot Espace Spa & Wellness Centre at One&Only Portonovi

As the first Chenot collaboration outside of its renowned medical facilities, One&Only proudly champions the Chenot Method—a science-backed approach that ‘addresses the body as a holistic system, unleashes your body’s self-healing power, and reduces the negative effects of biological aging.’ This transformative method blends the precision of functional Western medicine with the wisdom of ancient Chinese philosophies, building a robust foundation across six essential pillars: consultations, diagnostics, diet, hydrotherapy, massage, and bio-energetic screenings.

Elevating the experience further, intravenous infusions and healing acupuncture are available to accelerate regeneration and optimise vitality. Within this restorative sanctuary, guests are invited to rethink their approach to Wellness through meticulously curated Detox, De-Stress, and Fitness programmes. These bespoke journeys are perfectly complemented by access to a state-of-the-art gym, sauna, steam room, hammam, and five stunning outdoor pools, all set against the backdrop of a pristine private beach.

SIRO Boka Place in Montenegro

Designed as a dedicated ‘active lifestyle’ hotel, SIRO Boka Place offers a holistic approach to wellness that goes far beyond the ordinary. With sleep-optimised features, cutting-edge Fitness & Recovery labs, invigorating group classes, and a wide variety of outdoor activities designed to get your blood pumping, SIRO invites guests to push boundaries and unlock their peak physical and mental performance.

Whether it’s building strength through resistance training, boosting stamina with full-body boxing, or exploring new movement modalities, every element encourages stepping out of your comfort zone. When it’s time to restore and rejuvenate, the hotel provides assisted stretching, lymphatic drainage, facial sculpting, and red-light therapy to ensure a complete mind-body reset.

The minimalist design of the suites and bay-view apartments fosters a sense of calm, providing an uncluttered, restful space—a necessary sanctuary after days filled with spirited motion and mindful effort. At SIRO Boka Place, longevity is promoted through the harmonious balance of dynamic movement and restorative stillness, perfectly capturing the essence of One&Only wellness retreats. Their inspiring slogan sums it up beautifully: “Unlock your potential. Live without compromise.”