Dandolo also made trips to Constantinople in 1183 and 1184. The first voyage, on which he embarked with his brother, Giovanni, was the first in which he acted as a ducal legate. On this trip, he most likely engaged in negotiations for reparations of the city's Venetian quarter with the new Byzantine emperor Andronicus I. He also invested and restored land to Venetian monasteries, a deed which earned him the position of legal advocate for the monastery of San Cipriano di Murano.