Google Vacation Rentals and TripAdvisor are search and metasearch channels: they show your property, rates and availability to travelers who have not decided where to book. Optimizing them means accurate listing content and photos, rate parity and availability across channels, and a direct booking link that is competitive with the OTAs.
Santorini sells mostly through Booking.com, Airbnb, Expedia and luxury agencies. Short-term rentals on Santorini earn most when listings price the view correctly. A cave house with a private hot tub facing the sunset is a different product from a similar house facing east, and pricing both from the same base leaves money on the table. Couples book three to five nights, often as part of an island-hopping route, so we align minimum stays with ferry patterns and keep gap nights sellable. Beach-side rentals at Kamari and Perissa need family rates and weekly offers instead.
Booking.com and Expedia lead for hotels, with Expedia strong among American honeymooners. Airbnb matters for cave houses and villas, and luxury agencies cover the top tier of caldera suites. We make sure view categories are described identically across channels so guests do not book the wrong room type and leave a poor review.
The full service is described on our other ota optimization page; this page covers how it applies in Santorini.