I stayed twice in the Eldorado hotel, before and after my 2 weeks jungle tour.
Standards are different in Iquitos and as on the first stay I was given a room without windows it felt a bit disappointing, but after the jungle, I appreciated very much the dry / cool and clean room, this time with a window and no bugs around..
The staff is friendly and helpful, the breakfast is plenty with everything and tropical fruits and juices
It was a great place and convenient location. It's a touch away from the boulevard so you aren't peppered by scammers as soon as you exit the hotel.
While the workers don't speak English a translator worked fine and get everything I need. I didn't see breakfast though and I didn't ask.
The breakfast is very average, but the waiter in the restaurant is very enthusiastic. If you have any situation, you will come over and ask for help. You will be asked separately if you want eggs. The room is okay, but the decoration is relatively old. The windows are on the patio. Generally speaking, it is okay. The supplies are not complete, but the good thing is that they can provide free shuttle planes.