Great location! It is really in walking distance (5-10 minutes) from the Colloseum and the historic city center and easy to find from Termini.
The room is smaller then it appears in the pictures but it got all everything you need and is really clean, so is the bathroom. The street below the room is really quiet so you won't be disturbed by any sirenes at night.
The breakfast is simple but just all you need to start your day of exploring and the coffee is great.
We loved our stay at Nori B&B and felt really at home.