Positives: the boats run on schedule, the boat staff were friendly, the boats were clean and uncrowded. When I called to get further information, they were responsive and helpful. We had a delightful tour of the islands and practically had the boat to ourselves.
Areas for improvement: Communication in advance was lacking. The schedule we found was incorrect, and the meeting point information non-existent. We had no idea where to meet the boat in San Marcos until I called their number. Since we had an old version of the schedule, we missed an earlier departure, and had less time to visit the islands. The tour operator should send a correct link to the schedule, etc. in advance. I recommend that once you have your reservation confirmed, call the number for Venetiana to get the schedule and meeting points in advance of your specified day for the tour.