From Shimla you take NH 22 via Kufri to Narkanda(64 kms). At Narkanda, you leave NH 22 and get on to the Narkanda-Thanedar-Bithal road.
Thanedhar is 15 kms down the road and the Banjara Orchard Retreat is 1 km short of the Thanedar Bazar. A signboard of the Retreat greets you at the turn off. The same road carries on to meet the Shimla-Sangla highway (NH 22) at Bithal, which is 21 km from the Retreat.