A small plaza located a few blocks away from the famous Plaza de Armas. It's surrounded by coffee shops and restaurants if you wish to enjoy a meal or a hot cuppa. Or you can just plop down and read a book as the city passes by.
Wikipedia (Spanish) https://es.wikipedia.org/wiki/Plaza_San_Francisco_(Cusco)
Address Granada, Cuzco, Peru
Coordinates -13°31'6.617" N -71°58'53.187" E