http://www.crete-holiday.org/crete-holiday-rentals/

Car hire in Crete?
Hello. Just booked holidays in Crete. We are planning to rent a car, but I guess that most rental companies vehicles are not open 24 hours … and we will arrive at Heraklion, in about two hours. Does anyone know if you can get the car at that time at all? thanks
Yes u can give at the airport or can rent or Internet at any time either before coming here ur some useful links … good luck .. http://www.hersonissos-cafe.com/Hersonissos-Cars.html
My Holiday in Crete