My wife and I and another couple spent a week in Buenos Aires in December 2006.  Since we had never been to South America before and speak very little Spanish, we arranged through a web site to have Esteban act as our guide for three days.  Without a doubt Esteban was the most important element in making our vacation in Buenos Aires unforgettable.
He understood perfectly the kinds of things we wanted to see and do and his suggestions and contacts made us confident and at ease when we were "on our own."  We all feel we could never have experienced Buenos Aires and its attractions as simple tourists.  Esteban is intelligent, knowledgeable, unpretentious and simply charming.  His English is excellent.  He is the kind of person you feel is more of a friend you can always call on rather than a guide.  We recommend him with confidence and enthusiasm.

Gerald Mead