We loved Casa Sofia! Beautifully decorated, love the terrace, complimentary wine, and advice on nearby shops and restaurants. Our main attraction for this leg of the trip was the Vatican and it's so close by! AC worked great, bed was comfy, kitchen and bathroom were clean and modern! Indoor seating area was nice too. Clear and easy checkout instructions.
Only "know before you go" stuff: The street entrance is a small barred gate between a closed shop (with graffiti on it) and a nice restaurant, and in our jet lag, we thought the taxi driver was dumping us at the wrong place bc it looked nothing like the photos. Also, the photos show one pretty and manageable flight of stairs, but there are two long flights of stairs -- a challenge in the heat with luggage. And third, lol, there's not much leg room in front of the toilet -- but we know small bathrooms are common in Roman apartments.