From San José: You must take a bus that goes to La Fortuna de San Carlos, from Terminal 7-10 located diagonally to the old Lebanese Cinema.
Once in La Fortuna, there are several ways to get to the waterfall according to the budget of each person. It can be reached by taxi for a price close to $ 10. There are also quad and horseback tours, which you can ask once you are in the center of Fortuna.
Finally, if you are a lover of hiking, you can use this means to reach the Rio Fortuna Waterfall Ecological Reserve.