Possible Clues:

• Second of Rome’s 22 rioni (districts)
• Amuse daughter going round water feature in capital
• Fountain near Rome's Spanish Steps
• Roma's Fontana di __
• 'Three Coins ...' fountain
• District in Rome
• Italian fountain at the junction of three roads
• -- Fountain (Rome landmark)
• Rome's famous fountain
• Diverting back round fountain