Kevin R.
Google
This was a great side trip for me and the wife on the trip back to San Jose for Playa Hermosa. It is a short (2.5km one way) hike to a beautiful waterfall. About half down and half up on the way in. The last half km on the way out is challenging. Wear sturdy shoes, pack water, a snack maybe, and a towel.
Know what you are getting in to. This is not a guided easy stroll to a scenic feature. This is a nature hike requiring you to be somewhat physically fit. The trails are well maintained but steep in some places. I am adding this because some reviewers complained about the hike, the trail, the distance, the conditions, the cost (guided tours are more and do not put you close to the falls), etc.
There are two areas to stop for a swim and to cool off on the way in or out. I recommend this if you are adventuraous and enjoy some physical activity. Unless you are on an extreme vacay budget the $20 fee is affordable and well worth the cost.