The specific site for the workshop will be Hotel Cataratas in the Parque Nacional Iguazú. This location has excellent facilities that can accommodate the participants of this workshop. For more details see: http://www.hotelcataratas.com/
Iguassu Falls is on the frontier between Argentina, Brazil and Paraguay. It is 1065 km southwest from Sao Paulo (Brazil), on the Brazilian side of the Parana river. The distance from Buenos Aires (Argentinean capital) is 1350 km and 326 km from Asuncion (Paraguayan Capital). The region is served by three airports and bus stations: Foz do Iguaçu (Brazil), Puerto Iguazu (Argentina), and Ciudad del Este (Paraguay). Arrival in Brazil or Argentina is recommended, depending on your convenience.
To learn more about the Iguassu Falls and the region go here