The place was very cozy. It is a 8 minute walk away from St. Peter's square and another 8ish minute walk past that to reach the Vatican. The view is unbeatable. It is safe and a great area. This place is also directly next door to a Pam's Supermercato which has everything you need.
Host is responsive to messages.
Only reason we gave 4 stars is because we couldn't find any silverware and because the shower is quite small and is either extremely hot or extremely cold. We had to shower in between the moments (about 20 seconds at a time) when the water was warm when shifting from hot to cold. Other than that, it was quite an enjoyable stay. Likely may stay again if we come back to Rome.
P.S. Never fly Tap Air Portugal. They are cheap, but you get what you pay for - they lost our luggage for 5 days. It was awful. But we finally got it back near the end of our stay. Hope you enjoy your stay in Rome too.