This well-run youth hostel is about 3km west of Onoaida, nestled into the forest. Accommodation is in either Japanese- or Western-style dorms, and the shared kitchen and bathroom facilities are spotless. Get off any southbound buses from Miyanoura at the Hirauchi-iriguchi bus stop and take the road towards the sea for about 200m.
It's the sister property of the Yakushima Youth Hostel, located in the island's north.