Nagomi is in Naoshima General Welfare Center. You need to buy food vouchers like a cafeteria of a health spa.
It is nice to have a meal with seeing the ocean or in the courtyard as the shop is on the hill.
Spa is open on Sundays. A useful place to take a rest while you wait for ferry.
10:00-17:00 * closed after 14:00 on Tuesdays from Oct to Jun