Hôtel Costes takes reservations directly: through its website, by phone at +33 1 42 44 50 00 or by email at contact@hotelcostes.com. The address is 7 rue de Castiglione, 75001 Paris. No closure has been announced to date, and no private hire rates are published: for that kind of request, the channel is direct contact with the hotel.
Worth knowing before hoping for special treatment: no free route has been formalized by the house, no published guest list, no published media partnership. The table is secured by booking, and timing matters as much as the table itself: in 2026, weekday evenings during Paris couture week, from 6 to 9 July, maximize your chances of crossing paths with the fashion crowd.