Embassy of Argentina in Hanoi, Vietnam Address: Sentinel Place, 41A Ly Thai To Street, Hoan Kiem District, Hanoi City, Vietnam. Phone : (024) 3831 5262 | in Hanoi – 3831 5262 | outside Hanoi – 024 3831 5262 | outside Vietnam – 00 8424 3831 5262 Website : http://vietnam.