It is a bit pricy comparing to the other ones in Japan but also it is one of the few options in Zamami Island. I lived in an Island and I know that are usually more expensive than main land. The hostel does not offer breakfast but just few steps there are supermarkets, cafes and you can also do a quick meal with basic kitchen facilities.
While I was there the volunteers were really nice working and the owners are always close helping you. For sure I would go back and recommend a visit to Zamami Island.