This room was exactly as described. Small single room that has been redone. Good air conditioning and private bath in the hallway. A bit of a pain to have to lock the room, go out into hallway, lock bathroom and do in reverse, but it is manageable. Shower is TINY! I am 5'5" and 125 and could barely raise my arms in the shower.
However, location is good, short walk to Roma Termini: trains, metro