Highly recommend this tour and Marcelo. We loved our day visiting the Falls with Marcelo. (We did the Brazil side with Marcelo the previous day.) Marcelo is very knowledgeable and gave us detailed information about the Falls and the flora, insects and animals we saw. He knew the best approach to the train, trails and facilities. The Falls are amazing! Marcelo is respected among his tour guides who we encountered on the trails. He’s also an excellent driver and picked us up at our Airbnb as promised. Book!!!