Also (and probably more of a challenge), I have a Sunday morning 5:55am flight leaving from the Athens International Airport. I would like to stay on Santorini as late as possible, then take the ferry back to Athens (whichever port is closest), then back to the airport.
Finally, can anyone tell me how late the public transportation runs to the airport from the ferry ports, and how much it is?
P.S. Any suggestions for a cheap hotel with a view in Naxos?