Liaigre hôtel costes spa features travertine walls, elegant lighting, and comfortable seating in Paris.

Liaigre Transforms Hôtel Costes Spa with Luxurious Travertine and Oak Design

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Written by Flynn Matthews

2026-10-07

The Transformation of a Parisian Icon

The renowned Hôtel Costes, crafted by Jean-Louis and Gilbert Costes, has long epitomized Parisian luxury since its inception in 1995. Originally brought to life with the creative genius of Jacques Garcia on Rue Saint-Honoré, the venue expanded with the former Hotel Lotti, enhancing its allure with an entrance on Rue de Castiglione. This spa contributes significantly to this sense of refined elegance and luxury.

Cozy lounge area with plush seating and warm wooden elements.
Spa entrance with contemporary wooden door and ambient lighting.

Liaigre‘s Contemporary Elegance: The Liaigre Hôtel Costes Spa

Liaigre, the design firm behind the Castiglione wing, has returned to revitalize the luxury complex at the heart of this elegant extension. The spa showcases an opulent use of travertine, smoked oak, lacquer, and liquid amber, weaving a tapestry of sophistication and modernity. This sensory haven offers visitors a sanctuary of calm amidst the vibrant city. The revitalized space is truly a masterpiece of luxury design.

Massage room featuring wooden decor and soft, ambient light.

For those fascinated by how modern design transforms spaces into luxurious retreats, explore how Formafantasma reshapes exhibition spaces using innovative design elements.

Quiet relaxation area with cushioned seating surrounded by lush plants.
Sleek spa corridor lined with travertine and minimalist design.

An Immersive Sensory Experience

Upon entering through a stunning double staircase and metal gates, guests are enveloped in a multisensory symphony. This space, featuring a Dolby Atmos sound system and a signature fragrance by Olivia Giacobetti, captivates with its enticing embrace. The lighting, designed by Arnold Chan and Isometrix, is perfectly calibrated to refine the spa’s ambiance. This exclusive retreat provides an unparalleled experience for its guests.

Luxurious spa treatment room with a tranquil ambiance and wood accents.
Elegant spa interior with soft lighting and travertine stone accents.

The Oasis at the Heart of Hôtel Costes

The liaison between cutting-edge design and serene relaxation is embodied in the centerpiece of the spa: a stunning 65-foot-long pool, lined with lagoon mosaic and featuring oxygen-enhanced water under a coffered ceiling. It is flanked by luxurious lounge nooks, offering tranquility and relaxation. Guests can indulge in treatments from the acclaimed skincare brand Augustinus Bader, enhancing their rejuvenation experience.

Spacious waiting area with elegant decor and natural light streaming in.

Source: design-milk.com

Frequently asked questions

Who revamped the Hôtel Costes Spa design?

Liaigre, the design firm behind the Castiglione wing, has returned to revitalize the luxury complex.

What materials were used in the Hôtel Costes Spa design?

The spa showcases an opulent use of travertine, smoked oak, lacquer, and liquid amber.

What is a key feature of the Hôtel Costes Spa pool?

The spa features a stunning 65-foot-long pool, lined with lagoon mosaic and featuring oxygen-enhanced water under a coffered ceiling.