Has anyone done the waterfall voyage in Guatemala?

[Cortney]

Hi everyone! I'm sailing on the Norwegian Spirit in February and although we're always hesitant to book shore excursions — we don't like getting hemmed in with a bunch of people and prefer to just get a cabbie to give us a tour, etc. — the Las Escobas Waterfall Voyage in Santo Tomas De Castilla sounded very interesting. Here's the description:

Your tour will begin with a drive to the Escobas Waterfalls, a protected area within the Cerro San Gil Nature Reserve. Once at the site, you'll begin walking a trail through the humid tropical forest ecosystem. This rainforest is found in the jurisdictions of Livingston and Puerto Barrios which forms part of the mountain chain of El Mico. Once at the waterfalls, you'll have the opportunity to swim in the crystal-clear waters before heading back to the pier. Note: Wear a swimsuit and bring a towel.

I was wondering if anyone had been on this excursion, and if so, what they thought about it and how long you were out at the falls, how long it took to get there, how strenuous the trail was, etc. Thanks!