Follow the signs for Gourin out of Guémené-sur-Scorff onto the D1. Leaving Guémené you'll drive for 7km and arrive at a crossroads called "la Croix de Lanvorch" with a signpost pointing left to Ploërdut and right to Langoëlan. Turn right towards Langoëlan and after 1.3km you'll see Les Gites de Guernegroach on your right, a big courtyard with a tree in the middle of it and buildings in a "U" around it. Number 3, "La Chaumière" is at the bottom of the courtyard and access is the little road to the left of the building.