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Liaigre has completed a new spa at Hôtel Costes in Paris, extending the design firm’s work in the hotel’s Castiglione wing. The facility includes a 65-foot swimming pool, eight treatment rooms and skincare services by Augustinus Bader; operating details and access arrangements were not provided in the report.

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

The spa occupies the base of the Castiglione wing, which Liaigre previously designed. Design Milk reports that the interiors use travertine, smoked oak, lacquer and liquid amber, with the materials intended to carry forward a contemporary aesthetic associated with the hotel’s design history. The project is credited to the Liaigre studio.

Visitors enter through molded metal gates and reach reception at the foot of a double staircase. The reception features Dolby Atmos audio and a custom fragrance created by perfumer Olivia Giacobetti. Lighting for the spa was designed by Arnold Chan and Isometrix, the report says.

The central feature is a 65-foot-long pool beneath a coffered ceiling, lined with lagoon mosaic and filled with oxygen-enriched water, according to Design Milk. Curtained lounge alcoves surround the pool. The spa also has eight treatment rooms offering skincare treatments by Augustinus Bader, the U.K.-based brand identified as the spa’s partner.

At a glance
reportWhen: Reported by Design Milk; the source doe…
The developmentDesign Milk reports that Liaigre has completed a spa redesign at Hôtel Costes in Paris, adding a pool and treatment facilities to the hotel’s Castiglione wing.

A New Wellness Offer at Costes

The spa adds a substantial wellness component to a hotel known for its hospitality and interiors. A long indoor pool and eight treatment rooms broaden the facilities available to guests beyond accommodation and dining, while the partnership with Augustinus Bader gives the spa a named skincare provider.

The project also continues Liaigre’s role in shaping the hotel’s newer wing. Its use of stone, wood, lacquer and designed lighting makes the spa part of the property’s broader interior identity, rather than a separate amenity described only by its services. The source does not provide pricing or say whether spa appointments are available to people who are not staying at the hotel.

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From Rue Saint-Honoré to Castiglione

Hôtel Costes opened in 1995 on Rue Saint-Honoré under brothers Jean-Louis and Gilbert Costes. Design Milk describes the original hotel interiors as the work of Jacques Garcia and notes that the brothers’ hospitality career began with a bar designed by Philippe Starck.

The hotel later expanded into a second wing after the Costes brothers acquired nearby Hotel Lotti, whose entrance is on Rue de Castiglione. Liaigre designed that wing, and the spa marks the studio’s return to the building. The report presents the facility as a new addition to the hotel, but does not give a dated construction or opening timeline.

“The spa’s interiors use “travertine, smoked oak, lacquer, and liquid amber.””

— Design Milk, in its report on the project

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Opening and Access Details

The source report does not state when the spa opened or was completed, give its operating hours, or explain how guests can book treatments. It also does not clarify whether the pool and treatment rooms are restricted to hotel guests or available to outside visitors.

Design Milk supplies the reported design and facility details but does not include comment from Hôtel Costes or Liaigre. The cost of treatments, available services beyond skincare, and the meaning or technical specifications of the pool’s oxygen-enriched water are not provided.

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Booking and Operations to Watch

The immediate next practical details for prospective visitors are the spa’s booking arrangements, hours and access rules. Hôtel Costes or Liaigre may provide further information on those points, but the source report does not announce a future event, service launch date or additional phase of work.

Until the hotel publishes operating information, readers can confirm only the facilities and design elements described in the report. Further details would also establish treatment pricing and whether non-residents can use the pool or book services.

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Key Questions

What is the news about Hôtel Costes?

Liaigre has completed a spa at the Paris hotel’s Castiglione wing, according to Design Milk. The facility includes a pool, lounge alcoves and treatment rooms.

What facilities does the spa have?

The report describes a 65-foot swimming pool, curtained lounge alcoves and eight treatment rooms. It says the rooms offer skincare treatments by Augustinus Bader.

Who designed the spa?

The spa was designed by Liaigre, the firm that also designed Hôtel Costes’s Castiglione wing. Design Milk credits Arnold Chan and Isometrix with the lighting design.

Can non-hotel guests use the spa?

The report does not say whether the spa is open to visitors who are not staying at Hôtel Costes. Access and booking rules have not been specified in the source material.

When did the spa open, and what do treatments cost?

Design Milk does not provide an opening date, operating hours or treatment prices. Those details remain unconfirmed in the available report.

Source: rss

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