Aristotelis is wonderful! We truly made a new friend in Athens. He is enthusiastic, positive, highly knowledgeable, speaks excellent English and is a fabulous guide. He really knows his history and his city/country. I would book again with him in a hearbeat and I would highly recommend him for any tour that he leads. The transportation he arranged for our group of eight was brand new and perfect and our driver, Ares, is also a great guy and very good driver. Aristotelis also helped me with some dinner reservations when I was concerned the language would be a barrier. I wish we had booked all our different tours with Aristotelis- but I will know for next time. :-)