It's was a bit of a hassle to get to because of the roads conditions. You can leave your car at the enterance of the bad road and hike about 1 mile to the ranger station. It's 15$ per person to enter the park but it also allow you to access to the other sections of the park as well (volcano area).
Make sure you bring bug spray and ware long pants!!! Lots of bugs. #waterfall #hiking #costarica