translate English to French: From the Grande Raccordo Anulare take exit 1 (Aurelia towards the center - centro), continue on Via Gregorio VII until you reach the Lungo Tevere, drive along the river and turn onto Ponte Garibaldi, cross this bridge and take Via Arenula (this is the beginning of the pedestrian area), when you get to Largo Arenula turn right on Via Florida then Via delle Botteghe Oscure, the second turn on the right is Via dei Placchi, Hosianum Palace is at number 23.
Une fois arrivé sur le Largo Arenula, tournez à droite dans la Via Florida, puis continuez sur le Via delle Botteghe Oscure. La deuxième rue à droite est la Via dei Placchi, au numéro 23 se trouve l'Hosianum Palace.