Yiannis was an excellent tour guide. He provided many details about Santorini in general as well as information about each stop along the way. Also, I took a bad fall while on tour (tripped in a divot on a cobblestone street) and he immediately jumped into action. Yiannis obtained ice for my knee from a local restaurant, modified the rest of the tour to accommodate my injury, and coordinated the most efficient way for me to return to my cruise ship (which included unconventional arrangements and waiting for quite a while). Despite the detours, my group didn’t feel like they lost out on anything because he is such an experienced and knowledgeable guide. I am eternally grateful for him as a guide and as a person.