Martínez is a city in San Isidro Partido, Buenos Aires Province. It is part of Greater Buenos Aires. It is served by a commuter train service, the Tren de la Costa tourist railway line, and many buses. Martinez and its surroundings is an affluent area where many well-to-do people live. It is considered relatively safe. Unicenter is a major shopping centre. Some of the better cafes are Cafe Victoria and Cafe Martinez. A favored street is Calle Alvear.