The apartment is beautiful and the description is accurate. It's large enough for a sizable group, and it is within walking distance of the Coliseum. It is not particularly convenient to any of the other major sites, but it doesn't claim to be.
I made a mistake, however, in failing to contact my host, Walter, far enough in advance to set up a time convenient to both of us to meet and gain access to the apartment. When I remembered, which was about three or four hours before our arrival, I messaged him through Airbnb several times, offering to store our bags at the train station so we could wander Rome until he was free to meet us. No response from Walter to these messages. Also no response to phone calls, until finally someone answered and without identifying himself said Walter would meet us at the apartment in thirty minutes. About 75 minutes later, Walter came and said the person on the phone had not been him; Walter had been in a high-level meeting and the number listed at Airbnb was not really his number. He blamed me for the mess, which was fair enough, except I had offered more than once to store our bags and go into Rome rather than wait at the apartment.
I share all of this because the renter needs to be aware that all responsibility falls on them when it comes to communication with Walter. I made a mistake, offered a convenient means of recovery, and instead stood outside on a hot Rome street waiting for Walter. But overall, it was my fault. I could have lived without his initial rudeness, however.