My wife and I stopped in Puerto Limon for a day recently while on a cruise. Overall, there then taking one of the cruise excursions. We checked trip advisor for a private guide. We wanted to see the Tortuguera Canal, and found some excellent reviews for Riverboat Francesca. It was an excellent decision. We took a taxi [arranged by them] to the starting point where Modesto was waiting. The 2 of us got into his boat. [Which could have held 10 to 12 people] and started up the canal. We passed a number of other boats loaded with up to 30 or 40 people. After about 30 min. we reached the point where most of these other boats turned back. We continued northward for almost 2 more hours. Modesto was an excellent guide, pointing out fauna and flora; and telling us much about the history of the area. My wife pointed out to me that Modesto's eyes never stopped searching the banks for something interesting to show us. At a few places the canal opened to the sea; and at one of these locations, we saw a number of small boats with people fishing. What Modesto told us is that these were workers from the banana plantations who were catching their food for the week. As it was a Sunday plantations were closed. After about 2 hours we stopped and fished for a short while with some rods that Modesto had in the boat. He then talk us for a wonderful lunch at a small restaurant [included in the price]. We then returned and on the way back stopped at a place where he knew we could take pictures of a waiting crocodile. Because we were only 2 people we paid a little more than if we had joined one of the other fully loaded boats; it was well worth it. I cannot imagine that anyone on one of those boats could have had the personal experience that we did.