The Plaza Hotel Buenos Aires is a currently closed five-star hotel in the Retiro district, just steps from the Calle Florida shopping area and overlooking the Plaza San Martín. The hotel, inaugurated in 1909, was part of several international chains including InterContinental, and Marriott, until it was closed in 2017.
Since then, the building has been refurbished and it is expected to be opened in 2027 as a complex that will include apartment buildings and a 12-floor hotel.
At the moment of being inaugurated, the 9-floor Plaza Hotel was the tallest building in Buenos Aires, until it was surpassed by the Kavanagh Building, inaugurated in 1936.
Wikipedia https://en.wikipedia.org/wiki/Plaza_Hotel_Buenos_Aires
Address 1001 Calle Florida, Ciudad Autónoma de Buenos Aires C1005AAU, Argentina
Coordinates -34°35'45.866" N -58°22'30.706" E