The Mischief Girl (1971)

Dreaming of finding her soulmate, romantic Marina lands a job as the personal tour guide of the grizzled expatriate and self-made millionaire, John Birdas. However, as charming but impecunious Marina goes sightseeing with homesick John, a chance encounter with handsome mechanic Kostas paves the way for an unexpected whirlwind romance under the bright Athenian sky. Now, two poor young lovers pose as sophisticated aristocrats in the name of love. But what happens if they blow their cover?