ESPA at Gianfranco Ferré is a small but perfect spa inside a designer boutique. The black-and-gold pool overlooks the lawn of a walled garden. Jacuzzi, steam bath, mud treatments and facials are available. If you've been lugging around too many shopping bags, consider the back massage (55mins, €105). The spa stays open way after the shops close; just ring the bell after 7pm. Book ahead.