Much of the Greek charter fleet is based in the area mostly at Alimos marina (Kalamaki)
Flights to and from Athens are numerous and good value. Getting to the departure marina is easy and quick.
Enormous selection of charter yachts
Two attractive itineraries for a one week cruise
You must cross shipping channel at start and finish (tiresome)
Crowded with other charterers less competent than you!
They are 6 night/7 day itineraries that with thought can be combined into 14 day cruises. If you have that long, consider the Southern Itinerary and continue south down the quieter East Coast of the Peloponnese.
This is not really designed to be a port of call for yachts, although there are above average officious Port Police. Protection even along the mole is but moderate. The attraction is the visit to the old traditional village of Olympos, but like most other visitors we hired a car from the main town in the south of the island, not wanting to risk our boat here.