There are several ways to the waterfalls, I did 2 of them. Sorry that I don?t remember where to start from the mainroad, but once on your trail you can?t miss it. I also recommend you that tour on horseback.
The 1st way (the one which also passes the bar on the hill opposite to the waterfalls) won?t be a pleasure for hiking. You have to cross a river, climb a lot, and it?s very muddy and slippery when it had rained.
The 2nd one wasn?t that adventurous, but muddy, too.
Both trails were very crowded, I think you should be sure.
Saludos