We had a fantastic four night stay at Fabrizio's apartment. Location is right in the heart of Rome, within 10-15 minutes walk of all the main sites, located on a street with several restaurants, gelato shops, and a small supermarket very close by.
Access is via a smart lock system, using your smart phone, so you will need data/roaming. Tricky at first, but then once we got the hang of it, it was easy and actually a lot less hassle than carrying keys all day.
The appartment was super clean, beds comfortable, and suitable size for us (2 adults and 2 kids). We didn't cook, but there is a well equipped kitchen, with hob and microwave. The TV is smart, so bring your password for streaming services if you don't want to watch Italian only!
Overall a lot to recommend, and we would definitely stay here again.