Sergio's place is absolutely amazing! We got a beautiful private room, with a private bathroom and a balcony with a view to the vatican, all with a modern and cosy design.
Sergio was available for every question, and sent us in advance extremely helpful directions to self check-in and to get around town.
The place might be a little far from city center, but it's worth it, and if we ever get to Rome again we would definitely check if it's available :)