We stumbled upon the PanExpedition brochure at our AirBnb. You should contact Alex by email (firstname.lastname@example.org or (+30) 27510 52270)-he responded within an hour to confirm our last-minute (the night before) booking and gave us plenty of information in preparation for our trip. He speaks perfect English and some French. We took the 3 hour (half day) Medieval Castle tour which includes kayaks, a certified tour guide, snacks, snorkels, first aid equipment, photos and video, and personal insurance. Alex was waiting for us when he arrived (in fact he told us later that he was picking up trash on the beach beforehand). He welcomed us warmly and gave us a quick orientation. He welcomed both experienced and inexperienced kayakers. He offered a choice in double or single kayaks and adjusted the kayak for our comfort. Alex customized the trip for our liking- he's very versatile in that he let us decide how we wanted our trip to go. He can be as involved or uninvolved as you would like. We enjoyed the historical background he provided immensely. He took us to the historical sites and then a private beach and provided delicious snacks and great conversation. Alex felt more like a friend than a tour guide but was also conscientious of our safety and well-being. We had about two weeks in Greece and Alex's tour was by far the best experience we had and the most worthwhile use of our money.