Paulina is an excellent tour guide, we did the Teotihuacan tour. She is fluent in English and her knowledge of history is outstanding! We could ask her any questions and she would answer every questions! She knows the area very well, is very attentive to the need of each of her passenger. Provided us with the time we needed to complete each visit. We had a full day tour and we are very very satisfied of our guide and tour. Thank you Paulina!