The Spa by Hermitage Gantois belongs to the five-star hotel set in a listed 15th-century hospice on Rue Pierre Mauroy. Besides treatment rooms it has a heated indoor pool and a hammam. Outside visitors reach them by booking a treatment: access to the pool and hammam is included for an hour before it starts. Treatments use Olivier Claire and Comfort Zone products, and the pool opens from 7 AM to 9 PM.