Complex sentence: The island is part of the Corfu regional unit, and is administered as a single municipality, which also includes the smaller islands of Ereikoussa, Mathraki and Othonoi.
Split into simpler sentences: The island is part of the Corfu regional unit, and is administered as a single municipality. The municipality includes the island of Corfu and the smaller islands of Ereikoussa, Mathraki and Othonoi.