The last time we arrived in Santorini, we had booked the car on line from Halaris rent a car website. The car was already at the airport when we arrived. Clean, brand new, with a contract of unlimited km and full insurance at the best rate of the island, as there was an offer. Halaris rent a car does offers!
At the end of the rental, we left the car at the port, catching the boat to ios so they collected the car from there with no extra cost!
The staff was both times, (delivering and collecting it), so kind. They gave us free map, information for the island and tips for the best places of the island. Really local experience. Amazing service.
For sure will need you again.