As a solo traveller who can't get a good night's sleep on a single bed, this place was a heaven. Double bed, quiet and private.
The room is in a building of private flats right next to Roma Termini. Airport shuttle bus stops almost in front of via Ratazzi so it's less than a minute walk.
You need to arrange your arrival time with the owner so he can be there to welcome you. There are two buttons for Buonanotte at the door. If one doesn't work, press another. The owner won't come downstairs, but will unlock the door remotely. I kinda missed the click sound so ended up ringing multiple times. If you don't arrange your arrival time you might end up having to call and wait until he arrives which can be a while as Roma is busy.
I thought the breakfast option was an ideal way of experiencing Roma. You get coupons for hot beverage and cornetto of your choice. Nothing screams Italian breakfast than cappuccino and cornetto. The breakfast is in Santa Maria Osteria on the road parallel to Termini, a few minutes walk from Buonanotte. You also get discounts for lunch and dinner there with the same coupon. I think it's the perfect place to have breakfast but practice your Italian, guys who work in the mornings know very little English and tend to only speak Italian.
Overall, it was an ideal place to stay. Roma center is at the walking distance. If you enjoy exploring and walking don't buy any tickets for any buses. There's something beautiful almost around every corner.