The apartment is exactly as pictured, with great natural light and simple, elegant furnishings. It overlooks the courtyard of the complex, and if I correctly recall what Claudio told me, was initially the residence of the driver for senatorial apartments in the complex.
Claudio was an excellently welcoming host. He immediately showed me around the neighborhood, took me to his favorite local cafe, told me about the local restaurants and grocery stores, showed me his art studio and introduced me to his new kitten, and even loaned me a spare bicycle for the time I stayed there. He also invited me to join he and his wife for dinner a couple of times, and offered to take me on a bicycle tour of Rome, but unfortunately, my work schedule did not allow it.
Overall, it was an excellent stay.
The one downside I found was that the circuit breaker would trip if the heaters were running at the same time as the water heater, and also I tried using the stove. Fortunately, it's easy to reset the circuit, but I'd have to remember to turn off the heaters or the water heater before cooking.