Our group of 9 took Viator's half-day tour. Our wonderful guide Aida booked the tourist ferry and showed us the main sights on this historic island. It was like going back to the 1930's---very charming! There were many tourists on this May Day; it was quite warm as well but our guide set a sensible pace and we did not feel rushed in any way. (I believe she stayed with us over the allotted time.) So thank you very much Aida for a wonderful experience!