The southern coastline of Kefalonia boasts a string of safe sandy beaches, good views to Zakynthos, and the fabulous backdrop of Mount Aenos (at 1628m the highest peak in the Ionian). The area is understandably popular with couples and families alike, although development is rather scattered (there are no big hotels or large resorts here).
Getting to South Kefalonia Saturday day flight Gatwick or Manchester to Kefalonia (upgrade service available from Gatwick). Then 20-45 mins by coach or taxi