From the South-West
If you come from the South-West (Orange, Nyons) over the D994, you take the N75 in direction of Aspres sur Buëch and Grenoble at the round-about in Serres. After Serres and a bridge you arrive at another round-about. Go to your right in the direction of Veynes and Gap. At Pont-de-Chabestan go to your right (D49) over the bridge of the Buëch in direction of Chabestan. At the first possibility go to your left (D448) and again to your left at the next road (D48). After two kilometres you arrive at Domaine de Sivas. Domaine de Sivas is at your left at a blue sign. La Ferme is the first building you come across, continue to your right onto Le Poème or La Lavandole.
For more detailed directions have a look at Google Directions.