we are arriving early in the morning by ship and don't need to fly out until the following day. However, we will be staying near the airport b/c the flight leaves early. Does anyone have suggestions if we want to sightsee in town (Acropolis, etc.) but have baggage and don't want to go back and forth to the airport/hotel to drop off our bags? Is there somewhere to store the baggage in town for a few hours?