"I consider Amazonas Explorer a strong option for private or tailored tours in the Sacred Valley and the Amazon; they arrange private group trips, take you off the beaten path, offer non-trekking activities such as ebikes and white-water rafting, and employ guides who speak fluent English and are so knowledgeable you feel like you’re learning from a professor — they were even featured in the book Turn Right at Machu Picchu." - Matthew Kepnes