MAGICAL!!!
Tips that I think would be helpful to know:
We booked a lagoon tour via WhatsApp with Restaurant La Rosa de Monterrubia, a lovely chap named Antonio. We spent a little extra on a private tour so we could go later when it was fully dark (very important - light and full moons are no bueno). Antonio gave us a price much lower than the larger group tours we were trying to book from the bigger places. We got a taxi from PE which took about 20 min each way. Arrived 8:15pm, well after sunset.
It was a little spooky pulling up to the restaurant when it was dark, after all the other tourists have left. But Antonio greeted us straight away and walked us down a wooden walkway to the dock.
A 20 min boat ride along the lagoon takes you to the swimming area where the luminescence is indescribable. That would’ve been more than enough value for our money. But we then cruised another 15 min or so to where the river meets the lagoon, and that is where I won’t spoil the magical display that awaits you. You CANNOT swim in this area, which has crocodiles, but if you’re lucky you’ll see their red eyes in the light and get a thrill.
The stars were incredible to gaze during the serene drive back on the calmest waters you’ve ever seen (sit up front).
Highly recommend!