Throughout the entire tour, the guides, Elena and Jose Luis, were incredibly well-prepared, engaging, careful, and attentive at all times. They are 1000 out of 10 recommended! The tour itself was excellent. The only issue was the bus; I'm not sure if it was because there were so many of us or if it was a hot day, but the air conditioning just couldn't keep up. We were quite uncomfortable as we could barely feel the AC.