Phaeakia
Technically one of the Ionian Islands, Phaeakia has no political connection to the others. The small population, the Phaeakians, keep to themselves and avoid the turmoils and politics of the rest of Elládos.
The island has its own petty king, who intentionally limits contact with the outside world.
Inspiration
Phaeacia (Scheria) is an island in The Odyssey.