From Termini station take the 64 or 40 express bus and stop in piazza Chiesa Nuova, on Corso Vittorio Emanuele, cross the street and go in Via dei Cartari. You arrive in a small square (Piazza della Moretta) with a newspaper stand. Take the street on its right and then turn right (Via Giulia) and take the first street on the left (Vicolo della Scimia) then go to the end, turn left and and walk to the end of Via Bravaria . You are now on Lungotevere by Ponte Mazzini. Once there cross the bridge and the street (Lungotevere) and go down the steps on your left,you are now in Via della Lungara, at 19 is Casa Internazionale delle donne