The location is absolutely perfect — you make a dozen steps through a very quiet alley and you are right on Campo dei Fiore with all its food and everything. A five minute walk gets you to Piazza Navona, etc.
The apartment is clean and well maintained. It would be perfect for two people, felt a bit cramped for our family of four. It would've felt better if the bedroom had a door, without it it's all one elongated space wrapped around the stairwell and the shaft of the cutest little elevator I've seen. High ceilings and mirrors on the walls make it look more spacious. Overall — a great place to stay in the heart of Rome.