Hello! Not relevant to you, of course, but it might help others. Personally, I used either the bus, which is quite inconvenient and stressful in the summer, or the services of a transfer company. There are several of them in Greece, but I ordered Aktis.taxi, as they are almost the only company that carries not only the airport-hotel-airport. The prices are normal, I was pleased with the free Wi-Fi in the car and water.