Best river boat tour in Arenal – La Fortuna Tres Amigos River is perhaps the most natural and beautiful navigable river in the region of the Arenal Volcano, La Fortuna and the northern plains in general. Lush surroundings border this river, and while you float down the river, until where it meets the San Carlos river, you might encounter several species of animals. Come and enjoy a unique experience on Tres Amigos (three friends) River, where we have the opportunity to observe the rich flora and fauna of Costa Rica and our beautiful landscapes that visitors fall in love with. Some species you may observe include: green macaws, scarlet macaws, toucans, aquatic birds, different species of monkeys and crocodiles. Visit and use of the facilities and trails or farm tour at Hotel Maquenque Eco Lodge. Our tour ends with a delicious lunch at “Paso de la Lapa” restaurant.