Ok, so maybe more tango than twist. Our three+ hour private walking tour with Oliver through la republica de Boca and the San Telmo neighborhoods was a terrifically interesting and informative introduction to two neighborhoods that had piqued our curiosity on our first afternoon in Buenos Aires. Buenos Tours was quickly responsive to our query and their follow-up demonstrated their willingness to tailor the tour to our interests and pace. Oliver provided locally specific information as well as a wider city perspective. There was an interaction with a shop keeper in San Telmo that yielded answers about both the culture of the neighborhood in the mid-19th century as well as a technical detail about the building...yes, the cast iron columns are original to the house. Cafes abound in both neighborhoods and Oliver included a visit. The stop afforded an opportunity to watch some folk and tango dancing as well as that day's demonstration by teachers for better treatment by the government. Buenos Tours will be our first call on any return visits.