The Hôtel Costes’s reputation precedes it. As one of Paris’s most exclusive and sought-after hospitality destinations, it has long stood as a beacon of luxury, discretion, and avant-garde style. Since it first opened its doors in 1995 under the vision of Jean-Louis and Gilbert Costes—the legendary impresario brothers who famously kicked off their careers with a groundbreaking bar designed by a then-unknown Philippe Starck—the property has defined high-end Parisian cool.
While the Hôtel Costes originally established its iconic presence on Rue Saint-Honoré, featuring an evocative, theatrical interior design by Jacques Garcia that captivated the global elite, the hotel has continued to evolve. In recent years, the destination expanded dramatically with the acquisition of the nearby Hotel Lotti, adding a grand second wing with a prominent entrance on Rue de Castiglione. This expansion allowed the property to grow not just in physical footprint, but in its capacity to offer unparalleled luxury experiences to travelers from around the world.
For discerning tourists and dedicated design enthusiasts alike, the legendary five-star venue has always been considered well worth its luxurious room rates. Now, patrons have even more reason to visit the historic address. Liaigre, the esteemed design firm responsible for the sophisticated aesthetic of the Castiglione wing, has returned to the property to conceptualize and execute a stunning redesign of the spa complex situated at the base of that very building.
Continuing the refined, contemporary design language that Christian Liaigre originally established throughout the hotel, the studio rendered the new spa in a palette of rich, solid materials. The material selection is both tactile and grounding. Travertine, smoked oak, high-gloss lacquer, and liquid amber come together to shape the spa spaces at the Hôtel Costes, gracefully coalescing into an environment that is simultaneously moody, sophisticated, and deeply re-energizing.
The journey into this subterranean sanctuary begins at the base of a majestic double staircase, drawing guests inward and downward through molded metal gates that signal a transition from the bustling streets of Paris into a realm of absolute tranquility. Upon passing the threshold, the reception area instantly sets the scene for the entire wellness experience. A cutting-edge Dolby Atmos sound system pipes out immersive, carefully curated audio that muffles the city outside, while the spa’s signature fragrance—custom-created by the renowned perfumer Olivia Giacobetti—subtly wafts through the air, engaging the senses from the very first moment.
This multi-sensory orchestration is further amplified by a sophisticated lighting design. Crafted by lighting experts Arnold Chan and Isometrix, the illumination plays a vital role in heightening the atmosphere, casting soft, flattering glows across the rich textures of the architecture and guiding guests smoothly through the subterranean corridors.
Yet, despite the meticulous attention given to every transitional space, the most dramatic and breathtaking moment of the entire architectural sequence is reserved for the spa’s central oasis. Tucked beneath a grand coffered ceiling, a magnificent 65-foot-long swimming pool serves as the literal and figurative heart of the wellness center. Lined meticulously in a deep lagoon mosaic that shimmers under the subdued, theatrical lighting, the pool is filled exclusively with oxygen-enriched water, offering a therapeutic swimming experience that aligns with the highest standards of modern wellness.
Surrounding the impressive pool, a series of intimate, curtained lounge nooks provides the ultimate leisurely experience for guests looking to unwind after a swim or a treatment. These private sanctuaries offer a rare sense of seclusion within the heart of a bustling European capital, allowing visitors to retreat into their own thoughts or enjoy quiet conversation in absolute comfort.
Beyond the aquatic centerpiece, the facility houses eight private treatment rooms dedicated to holistic care and advanced skincare. For this crucial component of the guest experience, Hôtel Costes partnered with the acclaimed U.K.-based skincare brand Augustinus Bader, known globally for its science-backed, highly effective formulas. Whether guests are seeking deep cellular rejuvenation, tailored facials, or restorative body treatments, the menu of services is designed to complement the architectural serenity of the space.
From the custom aromas by Olivia Giacobetti and the immersive acoustic engineering to the rich interplay of travertine and smoked oak, there is truly nothing that Hôtel Costes and Studio Liaigre left unconsidered in crafting this ultimate addition to their revered Parisian address.
