The Agua Azul waterfall is absolutely stunning with beautiful turquoise water, but you won't enjoy it as much if you will come with a tour to make five pictures and visit one of the local food places lined up along side it. To really souk up the beauty of it and enjoy it to the full I think you you need to spend a day around there. I and my partner had an early (8.30-9.00 am) breakfast there and where the only ones (only with the local sellers and restaurants setting up). We had the best view just to ourselves and it was breath-taking. Then we walked up the river and saw more beautiful places, small waterfalls, had a swim, had a picknic, as lots of resting places are prepared a long the side. We really had amazing day trip, but coming back we saw the tourist groups pushing around for the picture next to the main cascades. I would imagine why some people with tourist group would not enjoy that so much.
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