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Hôtel Costes has completed a new spa at its Paris property, designed by Liaigre, the studio responsible for the hotel’s Castiglione wing. The complex includes a 65-foot swimming pool, eight treatment rooms and design elements in travertine, smoked oak and lacquer; details such as opening arrangements and prices were not provided in the source report.
Hôtel Costes has completed a new spa in Paris, designed by Liaigre, the studio behind the hotel’s Castiglione wing. The addition brings a 65-foot swimming pool and eight treatment rooms to the five-star hotel, extending its hospitality offering with an interior built around travertine, smoked oak, lacquer and amber-toned finishes.
The spa sits at the base of the hotel building. According to Design Milk’s report, its design continues the contemporary aesthetic associated with the hotel’s Castiglione wing and uses solid, richly finished materials to create a subdued atmosphere. The project combines travertine, smoked oak, lacquer and liquid amber; the report does not give a construction budget or specify when work began.
Visitors enter near a double staircase and pass through molded metal gates to reach reception. The space incorporates a Dolby Atmos sound system, a custom fragrance created by perfumer Olivia Giacobetti, and lighting designed by Arnold Chan and Isometrix. These features are part of the sensory design described in the report, rather than independently measured claims about their effects.
The main pool is 65 feet long, lined with lagoon mosaic and filled with oxygen-enriched water, according to Design Milk. Curtained lounge alcoves surround it. The spa also has eight treatment rooms, with skincare treatments from U.K.-based brand Augustinus Bader, identified in the report as a spa partner. The source does not list the full treatment menu or explain how the pool’s water is treated.
A New Spa at the Costes Address
The completion adds a substantial wellness facility to a hotel already known for its hospitality and interiors. For guests, the announced amenities include both a large indoor pool and treatment rooms, expanding the services available within the property rather than relying solely on nearby spas. The project also extends Liaigre’s role at Hôtel Costes from the Castiglione wing to a central shared amenity.
Its significance is also architectural: the spa applies a distinct material and lighting scheme to the lower part of the building while retaining a relationship to the hotel’s contemporary design. The pool, sound system, fragrance and lighting are presented as parts of one coordinated visitor experience. The report does not provide evidence about guest numbers, commercial performance or whether the spa is open to people who are not staying at the hotel, so those practical effects remain unknown.
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From Hotel Lotti to the Spa
Hôtel Costes opened on Rue Saint-Honoré in 1995 under brothers Jean-Louis and Gilbert Costes, according to Design Milk. Its original interiors were designed by Jacques Garcia. The brothers later expanded the property after acquiring the nearby Hotel Lotti, whose entrance is on Rue de Castiglione.
Liaigre designed the Castiglione wing, and the spa represents a return by the studio to the hotel project. That history helps explain the design connection noted in the report: the new facility is described as continuing the contemporary aesthetic established in the wing. The report credits its photography to Matthieu Salvaing and was written by Elizabeth Pagliacolo, editor of Azure magazine.
““Travertine, smoked oak, lacquer, and liquid amber define the spa at Hôtel Costes.””
— Design Milk report
Opening Access and Prices Unreported
The report says the spa is complete but does not state its public opening date, operating hours, treatment prices or booking arrangements. It is also unclear whether access is limited to hotel guests or available to outside visitors. The full list of services and the technical details behind the oxygen-enriched pool water were not included.
No hotel statement, project budget, or independent assessment of the spa’s operations is supplied in the source material. The named amenities and design features are reported by Design Milk; claims about how they affect relaxation or guest experience should be understood as descriptive rather than independently verified outcomes.
Access Details Remain Pending
The next practical information for prospective visitors is likely to come from Hôtel Costes: whether the spa is accepting bookings, who may use it, and what treatments and rates are available. The source report does not announce a public launch event or provide a schedule for further updates.
Until the hotel publishes those details, the confirmed development is the completion of the Liaigre-designed facility and its stated features. Readers considering a visit will need to check directly with Hôtel Costes for current availability and access conditions.
Key Questions
What has Hôtel Costes completed?
The Paris hotel has completed a new Liaigre-designed spa at the base of its building, according to Design Milk.
What amenities are included?
The reported facilities include a 65-foot swimming pool, curtained lounge alcoves and eight treatment rooms. The spa also offers skincare treatments from Augustinus Bader, named as a partner.
Who designed the spa?
Liaigre designed the spa. The studio also designed Hôtel Costes’ Castiglione wing.
Can non-hotel guests use the spa?
The source report does not say whether the spa is open to non-guests. Access rules and booking details have not been provided.
When did the spa open, and how much do treatments cost?
The report describes the spa as completed but gives no opening date, treatment prices or operating hours. Visitors should contact Hôtel Costes for current information.
Source: rss
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