Darwin is an excellent guide. He is punctual, polite, patient, flexible, and very knowledgeable of the area and it’s history and speaks excellent English. Darwin met us at the airport and took us to our hotel where we reviewed the details of our tour. We spent the entire day from 7 am to 5 pm touring the local Inca sites and the sites in the Sacred Valley and had a great time. The next morning Darwin picked us up and took us to the train station on our way to Machu Picchu. If you want a private personal guide who goes out of his way to make sure you are having the best time possible you should select Darwin. Darwin said he also leads trecking expeditions to other remote Inca sights which we hope to come back to enjoy with him!