This was a fantastic trip covering a range of different environments. Highly recommended to anyone interested in flora, fauna and ecotourism. It was all I have learned in Geography and more!!
Exceeded high expectations! August is the rainy season, but the early morning starts meant that we fitted a lot in before the impressive downpours that sometimes happened later in the day. The range of wildlife we saw was astonishing; I'd picked this trip because of the visit to the Sloth Sanctuary, which was disappointing compared with the number of sloths that we saw in the wild. Our excellent guide was complemented by eagle eyed boat 'drivers' who also appeared to be keen and knowledgeable about wildlife and were ready and willing to nimbly propel the boats around to see something on the bank they had spotted: monkeys, lizards etc. The accommodation, in places, was not 5 star, but had its own charm and there is not that I would not happily revisit for one reason or another, even the very friendly one in Cahuita with its temperamental showers but very friendly owner.
Costa Rica is well known for its biodiversity, and this itinerary is well designed to show it off given the wide range of habitat visited over the 2 weeks. Starting on the Caribbean coast, we spent our first 2 days exploring the waterways of the Tortuguero National Park. From there, we visited various rain forests and then cloud forests as we increased altitude, climbing the central mountain range that divides the country and then descending to the Pacific coast.
Be prepared for contrasting weather as go, from hot and (very) humid to much cooler at the greater elevations, and be sure to pack accordingly. It's interesting to see the flora and fauna vary with these different ecosystems as you progress through the trip.
As previous reviewers have already commented on, the range of wildlife we saw (and heard) was huge, and included birds, mammals, reptiles, and invertebrates. Highlights for me include the toucans, humming birds, quetzal, sloth, and some impressively sized crocodile.
The accommodation was very comfortable and very well presented and the various eco-lodges certainly fitted the focus of the trip, helping you to feel immersed in the forest. Most had wildlife walking trails that you are able to explore without a need for a guide. I'd highly recommend the optional (guided) night walks as an opportunity to see the tree frogs and other amphibians and snakes.
I visited at the end of May, and decent waterproofs were essential - If, like me, you're taking cameras, make sure you have a waterproof bag for these too. Having said that, the weather was kind to us and although it rained frequently, it was pretty predictable and tended to be limited to the evenings so didn't impact on the excursions - but be prepared and aware that the itinerary is flexible to account for the weather if required.