I went twice on an Iguana Turismo excursion in the Jungle.... Each time, I went to the "Juma Lodge" and it was great!
You get to do a lot of different activities and everything is really well organised, you really don't loose your time and that's good.
The guides (at least, the two I had) were absolutely passionate about the forest and its environnement and it makes the treks and the excursions really interesting.
The night in the forest is a one in a lifetime opportunity for people who don't go often on adventures... I loved it!