It couldn't be better. The room was spacious enough to fold my carrier, the bed was comfortable and big enough for 2 people. Also room was super clean. Carmen gave me a privacy but when I asked her help, she was willing to help me anytime. She even washed my clothes.
The location was just 3-5mins away from Termini Station. At first you could get scared by the surroundings, but in general it's safe as long as you're doing what you do ans not doing what you shouldn't do. If I am lucky enough to go Rome again, I would like to stay at her place.