Our experience with Carlos was excellent. We went to the ancient ruins at Guachinonones. He fully understood some of our mobility limitations and arranged things so we could see the site within our capabiities. Of special note, there was a short but steep climb required to get the best possible view and photo opportuntiy. Carlos assisted my wife in such a detailed and caring fashion, telling her just where to step and how to step to ensure she could make the climb and descent and providing assistance where necessary. I have never seen such detailed care from a guide before. In addition to listening to us and our needs, this alone would put him in a special class in my book.