The Sala dei Consigli Superiori, this was originally its name, was decorated between 1914 and 1918. If the architecture of the palace refers to the Florentine 1500s style, as much of the Roman buildings in that period, here the influence is definitely that of Art Nouveau.

The author who decaorated this hall is Andrea Petroni. Born in 1863 in Venosa, of very humble origins, Petroni arrived in Naples at a very young age at the Academy of Fine Arts. After embracing Neapolitan verism by portraying elegant female figures - one of which can be admired on a wall of the famous Caffè Gambrinus in Neaples - and, after a parenthesis back to his homeland to narrate the difficult reality of the peasants of Basilicata, he finally arrived in Rome in 1910. Here a fellow countryman, Francesco Saverio Nitti, Minister of Agriculture, Industry and Trade, commissioned him to fresco the Sala Cavour.