Despite its small size and small population, as a tourist destination, Zamami Village has a surprisingly large amount of accommodation options. The least expensive option by far is the campground next to Ama Beach. Small-scale guest houses (also known as “minshuku” in Japanese, or locally as “Pensions”) comprise a majority of the village’s accommodations. There are two full-sized hotels in the village as well.
Additionally, most establishments are located within the primary Zamami Hamlet on Zamami Island.
There are many factors that affect the price per person (all hotels in Japan are charged by person not by room). Some such factors include type of sleeping arrangement (Japanese-style futon on tatami flooring vs. standard bed), private / shared bathrooms, whether or not meals are included, etc.
There are two guest houses that offer hostel-style sleeping arrangements. Iyonchi has male and female dormitory rooms with Japanese-style futon on tatami flooring for 1800 yen per person per night. Zamamia International Guest House has standard bed hostel-style arrangements for 2000 yen per person per night. Both places have shared showers and bathrooms.
The least expensive private rooms are from 3000 yen per person per night at a few different minshuku. These rooms tend to be Japanese-style futon on tatami-mat flooring with shared bathrooms and without meals. The least expensive standard bed room with a bathroom is 4000 yen per person per night.
While visitors usually have no problem in finding lunch or dinner in the main Zamami Hamlet, there are not really any restaurants that serve breakfast, so including breakfast with your lodging might be a good idea for those with the extra cash. Although, you will be able to find something at the super market if all else fails (bread, cup noodles, onigiri rice balls, etc.) However, the less populous Ama and Asa hamlets on Zamami Island do not have any restaurants (there’s a little snack shop near Ama Beach) and if you stay at an establishment in these areas breakfast is strongly recommended. Aka Island also lacks very many dining options and it is strongly recommended to include dinner in addition to breakfast with your accommodations.
Most establishments who have English speaking staff (or limited English abilities) require reservation by email. There are a few places that accept walk-in customers on the condition that they have available rooms.
Finally, do note, accommodations tend to become booked full quite quickly, and it is highly recommended to book your lodging (as well as ferry tickets) in advance.