There are so many tour companies for cruises in Santorini. We are looking for a semi private sunset tour early October that you highly recommend for good food, great crew, nice boat with seating for someone that might not be able to navigate the catamaran netting seating. We are styaing in Oia. I am getting thoroughly confused, but maybe they are all about the same and I am over thinking it! ha I would appreciate honest reviews that don't come from a tour operator. Thanks!!
We did a really nice sunset cruise out of Oia but I don't know the name because it was booked through our hotel operator. I think you'll find that is your best source for a reliable tour operator.
Our experience with Spiridakos Cruises was terrific. I don't believe they leave from Oia, but they do provide complimentary transfers from hotels on the island. https://www.santorini-yachts.com/