Antonello's place is a gem in a great location. It is closer to the public transportations, historical places to visit and great food options not far off. The only time we took the bus was from the terminal and to the terminal, every other trip was a walk. 20/30 mins at the max to the different sights.
The apartment is in the market place but not too crowded to access. It is a lively area packed with restaurants but once you enter the building you do not hear the noise. The access to the apartment within the building is easy and the apartment itself is spacious for 2 or 3 and even 4.
There is a nice small kitchen with everything required to cook other than the ingredients. We did not use the kitchen other than the fridge. There is a washer option and irorning board which we did not use as well.
The bath area may seem small compared to a regular hotel but this is Europe and space is a constraint so its a pretty good set up for the base use.
The bedroom is pretty nice sized with a good bed and comfortable spacing around that makes you feel spacey and not crowded like hotels.
The living area is nice with good seating, dining table, sofa beds and a TV. Wifi is included but its pretty weak. I had to rely mostly on the mobile network and very rarely got a solid connection of the wifi.
Antonello is an amazing host, great with communication and seems available almost 24*7. He gave us good recomondations for the restaurants and we tried a few and they were all amazing. One of the best hosts in all of my Airbnb experiences. With Antonello you get more than a great host, a great guide for local recommandations.
The only challenge I faced during the stay was the disturbance from outside during late night hours. I was sleeping on the exta bed outside and the first two nights I was disturbed by noises from outside for a while.  I struggle to sleep anywhere other than my home, bed and the noises disturb me easily. If you are a sound sleeper or someone who can sleep right after a long day of roaming/travel this may not be an issue.
Overall a great place, an amazing host. I will recommend this place to anyone looking to spend some time in Rome.