Martinez and San Isidro are known as the "deutsche Kolonie". There live a lot of people with German roots. In Belgrano I do not know where, but you should look for the "Pestalozzi Schule" which is the second German school in BA, the other one is the "Goethe Schule" in San isidro (or close to it, don´t know exactly). The German Embassy is also located in Belgrano.
Check out the german newspaper Argentinisches Tageblatt.
Viele Grüße,
Julia
Check out the german newspaper Argentinisches Tageblatt.
Viele Grüße,
Julia