My traveling group recently completed a month-long trip to several South American countries. In BsAs, we made the good choice of engaging Say Hueque Tour to to guide us. It was a marvelous experience and they went the extra mile to make our visit special.
We had several local guides throughout our travels in S America, and my friends all agree that Veronica of Say Hueque was the best. We really appreciated her in-depth historical explanation which gave us a better understanding of the places we visited. That, and the great beef made BsAs my favourite among the S American cities we visited!