This apartment is really unique, and the theme fits perfectly with a stay in Rome.
Pros:
Location: It is in a quiet part of Rome that is close to many stores/restaurants, as well as an area with ruins (and cats). There was easy access to several different bus stops to go anywhere we needed. It is also withing walking distance of the Pantheon, Marcellus Theater, and many other cool places.
Theme: Mentioned above
Price: The stay was much cheaper than other places in the area.
Cons:
Humidity: Since the stay is below the ground floor, it felt a bit humid, but not as much as our basement at home. There is a dehumidifier, but we never used it. We hung our towels in front of the ac/heater, and didn't have problems with them drying out.
Noise: You can hear (infrequently) neighbors in the hallway outside the front door pretty clearly.
Bathroom: The shower could use a curtain, and it sprays water on the toilet. Also, be prepared to crouch to get to the toilet.