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Hôtel Costes in Paris has completed a spa designed by Liaigre, the firm behind the hotel’s Castiglione wing. The spa includes a 65-foot swimming pool, eight treatment rooms and finishes including travertine and smoked oak; financial terms and opening details were not reported.

Hôtel Costes has completed a new spa in Paris, designed by Liaigre, the design firm behind the hotel’s Castiglione wing. The facility adds a 65-foot swimming pool and eight treatment rooms to the luxury hotel, with interiors built around travertine, smoked oak, lacquer and liquid amber, according to Design Milk.

The spa is located at the base of the building. Its reception sits beyond molded metal gates at the foot of a double staircase. Design Milk reports that a Dolby Atmos sound system supplies immersive audio, while a custom fragrance created by perfumer Olivia Giacobetti is used in the space. Lighting was designed by Arnold Chan and Isometrix.

The central pool is 65 feet long, lined with lagoon mosaic and filled with oxygen-enriched water, according to the report. Curtained lounge nooks surround it beneath a coffered ceiling. The spa also has eight treatment rooms, where guests can receive skincare treatments using products from British brand Augustinus Bader, identified as a spa partner.

Liaigre’s design draws on the contemporary aesthetic the firm established at the hotel, using what Design Milk describes as rich, solid materials. The report credits Matthieu Salvaing with the project photography. It does not provide the spa’s operating hours, treatment menu or pricing.

At a glance
reportWhen: Reported as completed; the source does…
The developmentLiaigre has completed its redesign of the spa at Hôtel Costes, adding a pool and treatment rooms to the Paris hotel.

A New Amenity for Hôtel Costes

The spa extends Hôtel Costes’ guest offering beyond its rooms and dining spaces, adding a substantial pool and dedicated treatment facilities within the hotel. For visitors, that means access to wellness services on site, including treatments using Augustinus Bader products, although the published report does not set out the available services or their cost.

The project also continues the hotel’s use of distinct design commissions. Liaigre, which worked on the Castiglione wing, has now shaped another part of the property. The result links the new spa to the hotel’s existing design direction while giving the lower-level complex its own material palette and sensory features. The report describes the space as intended to feel both moody and revitalizing; that is a design characterization, not an independently measured outcome.

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From Rue Saint-Honoré to Castiglione

Hôtel Costes opened in 1995 under brothers Jean-Louis and Gilbert Costes, according to Design Milk. The original hotel on Rue Saint-Honoré featured interiors by Jacques Garcia. The brothers later acquired the nearby Hotel Lotti and added a second wing with an entrance on Rue de Castiglione.

Liaigre designed that Castiglione wing before returning for the spa project. The new facility therefore forms part of the hotel’s ongoing development rather than a separate venue. The source describes Hôtel Costes as a five-star destination, but does not provide details about the spa’s capacity, access rules or whether it will admit people who are not hotel guests.

Opening Details Still Unreported

Design Milk describes the spa as completed, but does not give a public opening date or confirm whether it is already receiving guests. The report also leaves unclear whether access is limited to hotel residents, whether outside visitors can book treatments, and how pool use will be scheduled.

No treatment list, prices, hours or booking instructions are included. The description of the pool water as oxygen-enriched is reported without technical details about the treatment process. The source also does not provide comments from Hôtel Costes or Liaigre on the project’s cost, schedule or operational plans.

Guest Access and Bookings

The next practical information for prospective visitors is whether the spa is open for bookings and what access rules apply. Hôtel Costes has not provided those details in the source material. Readers seeking a visit will need to check the hotel’s current information for availability, treatment options, prices and pool access.

Further information from the hotel or Liaigre could also clarify the spa’s operating schedule and the technical details of its pool. Until those details are published, the confirmed account is limited to the facility’s design, principal amenities and named partners.

Key Questions

Who designed the new Hôtel Costes spa?

Liaigre designed the spa. The firm had also worked on the hotel’s Castiglione wing.

What facilities does the spa include?

The reported facilities include a 65-foot swimming pool, curtained lounge nooks and eight treatment rooms. The pool is lined with lagoon mosaic and described as holding oxygen-enriched water.

Which skincare brand is associated with the spa?

Augustinus Bader, a U.K.-based skincare brand, is named as a spa partner. The source says its products are used for treatments.

When did the spa open, and can non-guests use it?

The source describes the spa as completed but gives no opening date and does not say whether non-hotel guests can book access. Those details remain unconfirmed in the report.

Source: rss

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