More than 10 years ago, before the current owner bought and renovated it, we spent three months in this apartment. Since then we have come back to Rome regularly and always regretted that the apartment could not be rented any more; so we stayed in different areas of the Centro Storico. But we always considered the "Navona Apartment" our "home" in Rome. Simply the best location!! And the terraces, especially the one offering views of the Chiostro del Bramante, are perfect for a relaxing day or evening and to soak up the atmosphere of this exciting city.
By accident we found out that the been renovated and was available on airbnb. We immediately booked for two weeks -- and will certainly be back.
If you look for a true Roman experience, look no further!
A word of caution: this is a very old building (that's what you go to Rome for, don't you!?) and, thus, the staircase to the top floor on which the apt is located is narrow and steep. Should not be a problem for anyone because you will do a lot of walking in Rome anyway .. you will stay in great shape and burn of some of the calories which you will ingest in the many restaurats, bars, icecream shops etcetera.
Another characteristic of these old buildings is the "sensitive" plumbing. So DO follow the house rules, flush the toilets regularly. Otherwise you might get a whiff of ... you know what I mean. Again, not a real problem but sometimes people forget that a house that has been standing for hundreds of years works a bit different than a modern skyscraper.
In summary, highly recommended for a great time in Rome's Centro Storico. Excellent communication with the owner .. and Josie proved to be a very diligent housekeeper on location.