How long does the boat from Pucallpa to Iquitos take?

for all those travelers out there that have been to the Peruvian jungle. I want to take a trip from Pucallpa to iquitos through the ucayali river. How long does that take and how much does it cost? how often do they offer the service?, are u given a cabin or just a hamic? is it dangerous? safety wise and thieve wise. do they have bathrooms in the boat? does it stop to eat at different towns, if so how often or is the food given to u on board? is this whole trip worth it? And any othe info u think might be relevant for me about this trip! Thanks a lot!!