I do not understand Hotel dei Mellini's booking process at all. It makes me wonder if they are overbooking because I checked the hotel's online booking system and there were rooms showing available for my dates. I then verified by sending the hotel an email with the same date information given and was told that there were no rooms ...
This hotel was expensive, but is located in a relatively convenient location, a 15 minute walk to St. Peter's and across the bridge to great restaurants and sights (Trevi Fountain, Spanish Steps, and Piazza Navona). The staff spoke good English and was always helpful. The cold breakfast was good with plenty of choices; ham, cheese, fruit, ...