The hotel is a small boutiquey property off a main road just a few blocks from the colosseum. Location wise, it is not central, but still convenient to the train station (tip...take the one-stop subway ride if you're loaded down with luggage and the weather is warm...it's not as close as it seems to Termini Station), Roman Forum, Colosseum, National Museum and other sites. To get to other popular piazzas, sites, etc, you'll have to put on your walking shoes.
Best advice: Avoid rooms ending in "03." My room was adjacent to the elevator shaft. It wasn't the traffic that was bothersome or the noise of opening and closing doors, it was the noise from cables, pulleys and other technical things that kept knocking and pinging inside the walls and through my drop ceiling. After first blaming noisy neighbors, then construction in the building next door (receptionist reassured me there was no construction going on and especially none at 7 a.m.) I finally realized it was coming from the elevator shaft. I told management that I figured out the noise, but was only met with an "ok." Although I was disappointed by the reaction, I honestly didn't ask to be moved so I'm not sure what they could have done. Thankfully, I brought ear plugs and went to bed late at night when the elevator wasn't getting as much use.
Note, if you face the street, you will hear noise from the gelato store, restaurant, and Irish pub all within 25 feet from the hotel's entrance. Again, my earplugs helped.
My single bed room was small. Probably smaller than any place I've tried in New York. The small, single bed took about 1/3 of the space in the main room. Other space was taken by a standing wall cabinet (no drawers), a tv mounted to the wall, some floor space for your luggage stand and to walk, and a phone stand and cube sized seat. The bathroom leaves little room between the sink, toilet and bidet. In fact, you really need to walk sideways to get from the shower stall to the sink.
Breakfast was fine. Eggs, fruit, coffee, meats, etc are available in its very small dining area. You may have to wait for a table.