The hosts were very apologetic about the hourlong delay in my check-in, and provided a complimentary extra buffet meal coupon. The B&B is very comfortable--excellent, comfortable bed; very effective air conditioning; attractive decor and generally pleasant ambiance. The restaurant that provides breakfast is welcoming, and the pastry and coffee excellent. It is also convenient and good for a nearby dinner.
Especially valuable to me was the convenient location of Charm Of Rome to the Forum, where my touring interest was focused, and to the Termini station when it was time to return to the airport. Both are fifteen minutes away on foot.