Nefi is a WONDERFUL tour guide. From the first time I contacted him, he was very responsive and helpful. He helped to plan a tour around our budget that worked with our schedules. We were even able to add another two couples to our tour last minute (we were in Cancun for a wedding) and Nefi was very accommodating! We toured the ruins at Coba, swam in a Cenote, and then added on a stop at Akumal last minute to swim with the sea turtles. It was an incredible trip.
Everything was planned wonderfully. We arrived at Coba before large tour groups, where Nefi had arranged for us to have bikes to ride around, and he did a great job of timing out his stops at different sites at Coba so that we weren't around huge crowds. He gave us plenty of time to climb the huge temple at our own pace. We stopped for a Mayan buffet lunch (also included in the tour), and then went to the cenote. If you have never been to a cenote, you must make sure to have Nefi take you! After the cenote, we had asked Nefi if he knew of a place to swim with sea turtles, and he stopped at Akumal on the way back towards Cancun for us to check it out. He had snorkeling gear all ready for us, and even hung out on the beach watching all of our stuff as we were in the water.
Nefi has extensive experience as resident tour guide at Tulum and has spent pretty much his whole like around the ruins. He also has an educational background relating to Mayan history, so he is incredibly knowledgable. He is fun, personable, trustworthy, timely, and a very great driver. Also, his English is excellent. I would definitely recommend him for any type of tour you're interested in doing in the area (he's also a master diver for those scuba fans out there, and has lots of options for helping to create the dream tour for anyone!). So glad we booked this for our vacation!!