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Design firm Liaigre has completed a spa redesign at Hôtel Costes in Paris, extending the contemporary aesthetic it established in the hotel’s Castiglione wing. The facility includes a 65-foot swimming pool, eight treatment rooms and skincare services from Augustinus Bader; the source report does not provide an opening date, prices or access details.

Design firm Liaigre has completed a redesigned spa at Hôtel Costes in Paris, adding a 65-foot swimming pool and eight treatment rooms to the hotel. The project extends Liaigre’s design work at the property and gives the five-star hotel a new wellness facility, according to a report by Design Milk.

The spa is located at the base of the building. Design Milk reports that its interiors use travertine, smoked oak, lacquer and liquid amber, materials selected to carry forward the contemporary aesthetic associated with Liaigre’s earlier work for the hotel. The report describes the result as a dark, restorative setting, though that characterization is the publication’s design assessment rather than a measured claim about guest experience.

Visitors enter beneath a double staircase and pass through molded metal gates to the reception area. The arrival experience includes a Dolby Atmos audio system, a custom fragrance created by perfumer Olivia Giacobetti, and lighting by Arnold Chan and Isometrix, according to Design Milk. The article credits Matthieu Salvaing with the project photography.

The main pool is described as 65 feet long, lined with lagoon mosaic and filled with oxygen-enriched water. Curtained lounge spaces surround it. The spa also has eight treatment rooms, where guests can receive skincare treatments using products from U.K.-based Augustinus Bader, identified in the report as a spa partner. No treatment menu or service prices are included in the source material.

At a glance
announcementWhen: Reported by Design Milk; the source doe…
The developmentLiaigre has completed a new spa complex at Hôtel Costes, adding a pool and treatment rooms to the Paris hotel.

A New Wellness Offer at Costes

The spa adds a substantial wellness component to a hotel known for its rooms, restaurant and distinctive interiors. A long pool, relaxation areas and multiple treatment rooms broaden the services available on site, potentially giving guests another reason to spend time at the property. The source does not report whether the spa is included in room rates or available to non-hotel visitors, so its practical reach is not yet clear.

The project also extends Liaigre’s role in the hotel’s design. By returning to work on the spa after designing the Castiglione wing, the firm contributes to a more continuous visual identity across parts of a property developed over time. The design details place emphasis on materials, lighting, sound and fragrance, rather than presenting the facility only as a pool and treatment offering.

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From Hôtel Lotti to Castiglione

Hôtel Costes opened in 1995 on Rue Saint-Honoré under brothers Jean-Louis and Gilbert Costes. Design Milk notes that the hotel’s original interiors were created by Jacques Garcia, and that the brothers had previously established a reputation in hospitality through a bar designed by Philippe Starck.

The hotel later expanded into a nearby property, the Hotel Lotti, which the brothers acquired. That addition became the Castiglione wing, with an entrance on Rue de Castiglione, and Liaigre designed its interiors. The new spa is at the base of the building and continues the studio’s involvement in the expanded hotel. The report presents the spa as a completion of the property’s offerings, but does not describe construction dates or the sequence of design and opening milestones.

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Opening and Access Details

The source report does not state when the spa opened, whether it is currently accepting bookings, or whether access is limited to hotel guests. It also gives no information about opening hours, admission charges, treatment prices, pool rules or reservation procedures.

Descriptions such as “oxygen-enriched water” and the spa’s restorative atmosphere come from the design report; it does not provide technical details about the water system or independent evidence of health benefits. The article identifies Augustinus Bader as a partner but does not list specific treatments or explain the commercial arrangement. These details should be confirmed with Hôtel Costes directly before visitors make plans.

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Guest Services and Booking Information

The next practical information for prospective visitors is whether the spa is open for appointments, who may use its facilities and how to book. Hôtel Costes has not provided those details in the source material, and no public opening timetable or pricing is cited there. Guests considering a visit should check the hotel’s current communications for availability, access rules and service rates.

Further information may also clarify the treatment list, the use of Augustinus Bader products and whether pool access can be booked separately from treatments or accommodation. Until those details are published or confirmed by the hotel, the reported design and facility description is the clearest available account of the project.

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Key Questions

What has Liaigre completed at Hôtel Costes?

Liaigre has completed a redesign of the hotel’s spa complex at the base of the building in Paris.

What facilities does the spa have?

According to Design Milk, it includes a 65-foot swimming pool, curtained lounge spaces and eight treatment rooms.

Which skincare brand is associated with the treatments?

The report names Augustinus Bader, a U.K.-based skincare brand, as a spa partner. It does not specify the treatments offered.

Can non-hotel guests use the spa?

The source does not say whether the spa is open to non-hotel visitors. Access rules and booking details have not been provided.

How much does spa access cost?

The source report does not give admission or treatment prices. Visitors should check directly with Hôtel Costes for current rates.

Source: rss

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