This is a beautiful apartment and so central. We spent five nights here in late July with our teen daughters and found it had everything we needed and was very spacious - especially the two full bathrooms. We loved being so close to Piazza Navona and everything else in the centro storico. There are multiple buses to all the important sights and it’s walking distance to Trastevere. Also Antonella and Pino were so helpful meeting us and arranging a transfer.
I gave it 4 stars instead of 5 because it is so very loud in Campo dei Fiori, probably more so in full summer. It’s not just people talking, but loud music and a constant thumping. The only quiet hours are between 2 am, when the partying slows down, and 5:45 am, when the market gets set up. Not for light sleepers. Also the market is touristy. But those issues were reflected in reviews, so I don’t blame the owners. It’s just the reality.