Explore details about location Av. San Martín. Av. San Martín is a location situated within the Colonia Caroya alongside other areas such as Calle 4 - G. Casén (N), Calle 3 - A. Morandini (S), Calle 21 - G. Cespedes (S). Additionally, some smaller parts of Av. San Martín include specific areas like Calle 5 - G. Serafini (N), Igualdad, Calle 46 (bis) adding to the diversity of its landscape.