We travelled to the Los Campesinos Reserve to hike to the Waterfalls as recommended by the owners of the B&B we stayed at (Blue Banyan Inn). The hike to the Waterfalls themselves was not to far and once at the bottom we were able to have a swim in the clear, refreshing water. As an added bonus, we had the entire waterfall to ourselves! It really was a beautiful, remote location that felt like we were swimming in the middle of the rainforest.
Other than the waterfall, the other main attraction is the 170 metre long hanging bridge across the valley, looking down on the waterfall. The bridge is narrow and does sway a little, so it isn't for the feint hearted, but the view down to the waterfall while crossing it was certainly worth it.
There are other walks available too. We chose to do another one that was about 45 minutes, a little difficult in parts, but gorgeous and deep in to the rainforest.
Note, that none of the employees spoke English. This wasn't a major drama for us, but we did need a little patience to get directions.
There is food and simple, lodge accommodation available. We didn't utilize either, but what we saw seemed sufficient, albeit simple.
The drive out took about 1.5 hours (from Quepos), and takes you through some smaller villages, coupled with some gorgeous scenery. Do note though that you will need a 4WD. We were also advised by our B&B owners to come home if it started raining as the road can be especially 'hairy' after rain and mud/rock slides can occur.
All in all, a gorgeous area, off the main tourist path and a way to experience 'true' Costa Rica.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.