We had to spend one last night in Rome before flying back, and Mabri's accomodation was a great choice; clean, comfortable, and very close to Termini. Breakfast was included, albeit very basic. There was some mis-communication about A/C not being included in their system, but we showed our reservation in the evening and they happily fixed it.
A small note to light sleepers: sound isolation of the windows is good, but the walls are a bit thin, so you might be disturbed by the neighbors if they are noisy (use earplugs) :)