As has often been noted, Paris is a treasure trove of secret gardens and hidden gems. Le Spa on this property is most certainly one of those hidden sensory pleasure treasures. If you just do a drive-by of the property you might be tempted to think that you have mistakenly written down the address. But, upon entry, you will discover this hidden oasis in the Marais which conceals a vast inner courtyard and a spa devoted to the luxury-brand Payot products.