We stayed at Residenza Sciarra as a family of 4 (2teenagers). The B&B is a little tricky to located, but the taxi driver knew exactly where to take us. The people who run this B&B were very good with communicating with me ahead of time and arranged both the pickup and drop of to the airport. I was able to communicate with them anytime through Whatsapp, so very convenient. The B&B is not manned, but all instructions and door lock codes were all provided to us.
The B&B itself is SPOTLESS!!! They are excellent at cleaning. There is housekeeping daily, and towel exchange every 2 days. We never had an issue with anything. The breakfast is continental, with Delicious croissants, little sandwiches, yogurts, cereals, mild and juice and coffee! more than enough to get our day started!
The location is absolutely the best and most convenient. Just steps from the Trevi Fountain and Pantheon, and no more than a 20min walk anywhere else. There is a bus stop right outside the hotel, and many taxis available all the time.
The rooms are what you can expect from Europe. A little snug for the 4 of us with 4 HUGE suitcases and our bags, but we organized and found our routine, so no problem.
Overall, I would say the Residenza Sciarra is a good stay for anyone looking for convenience and a good price!