Despite us being late, we had the absolute BEST time with Kostas! We were held up at the port, & unfortunately got to our tour late, but Kostas was so accommodating and understanding. He was so knowledgeable about the island and told us a ton of interesting facts. He also took us to some of the best picture taking spots. He kept us on time and made sure we were back in time to get to our ship. I would 100% recommend him to anyone visiting Santorini! He was so kind, funny & made our experience so worth it!