we rented a small van (VW Caddy, 7 seats) for 2 weeks in Crete. Athenscars had the best rate of all other car rentals I contacted. For even cheaper than the other companies, they offered full insurance coverage, baby seats and 2nd driver.
We took the auto at Heraklion airport (1 minute walk, just in front of the main entrance) and dropped it back at their office West of Heraklion because it was easier for us. They even drove me back to the city center.
I definitively recommend!