Explore details about location Diag. 81- Nahuel Huapi. Diag. 81- Nahuel Huapi is a location situated within the Martín Coronado alongside other areas such as 822 - Chaco, 526 Bis - Madre M. de J. Cdo. Petkovic, 954 - Av. Presidente Juan Domingo Perón;Av. Presidente Juan Domingo Perón.