Colonia Carlos Pellegrini
Colonia Carlos Pellegrini is the biggest village in the Esteros del Ibera in Corrientes with about 500 permanent inhabitants. There are some hotels, hostels, restaurants and other basic tourist infrastructure. Apart from that its very rural.
There´s a bus Monday to Saturday from Mercedes at 12:30, 30 pesos (Feb 2014), 3 hours on a dirt road. Important: The microbus can just leave up to an hour before, because they can´t pass if it´s raining. It´s also told that the bus can be easily stuck on the way. There might also be occasionally a transport option from Posadas. You can also book a private transfer from any hotel/hospedaje in Colonia Carlos Pellegrini in advance. They'll pick you up from Gobernador Virasoro, Mercedes or Posadas. Cost of private transfer from Gobernador Virasoro is 80 USD for a car (Feb 2014). If you try to find and hire a car at the bus station on spot, make sure it is 4x4 SUV, otherwise you can be stuck in the middle of nowhere (without a mobile network signal).
Wildlife at its purest; such as marsh deer, caimans, capybaras, giant otters, anacondas, howler monkeys, armadillos, .... and of course the most important of all: 350 species of birds, many of them endemic or in danger of extinction.
Ibera Wetlands is a nature reserve 1000 km north of Buenos Aires. Swamp area of 13'000 square kilometres. With the richest fauna of all the country: Caimans, capybaras, swamp deer, howler monkeys, anacondas, manded wolves, armadillos, greater rhea, etc. etc. All of them at sight for the visitors when doing excursions by boat on foot/horse back. A true paradise for nature lovers, birders, eco-tourists and travelers looking for relax or the ultimate gaucho experience.
There are a few restaurants
There are different options for sleeping starting at about 25 Pesos for a bed in a dorm to a couple of hundred dollars in one of the luxury resorts. Tell the bus driver where you are going to stay and he will drop you off there. Most accommodation places offer (the same) tours.