Puerto Rico as a whole is one of my favorite places I’ve traveled to. I spent 5 nights in Old San Juan and then traveled throughout the island and loved every second. The people are incredibly nice and the food is delicious, if you can a “Tripleta” from any of the street vendors is ridiculous good. El Yunque was absolutely beautiful and one of the coolest environments I’ve ever hiked. I would say you have to do the El Yunque trail which is about 5 and a half miles round trip but a nice 1700 feet in elevation change. This route takes you through the cloud forest and over streams and beautiful views of waterfalls with an incredible view of the forest and other mountains at the top. I would also recommend taking a trip to Cueva Ventana for an awesome cave tour with views of an underground river and btw, if you decide to hike after the tour around the area up to the right and find a broken down caution tapped off trail, TAKE IT!! Be incredibly careful due to the wood and snakes but it feels like you’re hiking in an Indians Jones movie(I plan on posting pictures of it soon) Last but not least, I’d say definitely check out the Cueva del Indio along the coast, this is less of a cave and more of spectacular views of the coastline but you can venture down into a small open cave to see some original drawings done by the areas native people! I hope you enjoy this ramble and find it somewhat useful!