In Cancale, take the direction of Saint-Malo by the Pointe du Grouin.
After 3 Km, attention ! : when you see to your right the sign "ANSE du Verger", take the street on the left, directly after this sign. You are already on Rue des Roches d'Emeraude. After a turn, the house hides behind great Eucalyptus, at N° 14.