Amazon- Southern Peru trip help

I'm planning on being in Puerto Maldonaldo for just a few nights in the end of May. I want to see as much as possible, especially in the Amazon region. Word has it that most travelers are disappointed due to high cost and poor service.

I'm interested in going down the river in a boat, doing some fishing, meeting the natives, seeing all the flora and fauna, tasting the strange tropical fruits and basically having the complete off-the-beaten-track experience. What is the best way to do this without dropping loads of cash? Is this even a good a area? Should i be going to a different part of peru with in a similar distance from cusco

Thanks!

If you want to go off the beaten track, Puerto Maldonado and Iquitos are the worst destinations that you can pick because everyone goes there to get a taste of the Amazon.

Haven't been there myself, but I heard good stories about the Pucallpa area, from where it is supposedly possible to take a river boat downstream to Orellana. Maybe someone else can comment?

what would be the easiest way to get there?