A hellish freight boat trip on the Paraguay River

#AbsolutelyFreeTrip I heard about a three-day cruise from Concepcion to Fuerte Olimpo on a luxury cruise ship, but it was just a cargo ship and it was a hellish voyage. I was told to bring a hammock, so I did, but there was no space to hang it because of the people, livestock, and household goods. It seems like it will be impossible until some time has passed and the number of people decreases. In summer, the deck is scorching hot, but at night it is freezing cold. There was a snack stand on the ship. In the evening, you have to fight hundreds of mosquitoes. It's not very comfortable, but I recommend it for those who like adventure.