Excellent
This was a really nice excursion, pick up from the hotel (about 0830), drive to Kos Town, boat to Pserimos, a very cute beach with shops a good spot for a dip. Then Kalymnos Town (to see a sponge factory and eat at such nice taverna, Omilos), then onto Plati for a really nice swim. Lots of time on the boat, which does about 9knots or so, plenty of sunscreen required.