Ask around for a private guide in the town center at noon (Restaurante San Jose), our guide ordered a tuk tuk for the three of us and went there with his motorbike, we arrived at 3pm and had 3 hours with no other people on the hike, because the tours start at 8am. The light of the approaching dawn as we swam in the final waterfall was magical. If you're lucky you find ripe coffee fruits as a sweet snack on the hike!