Great stay! The location is very central, but near Rione Sanità, which means the streets are pretty dirty and you'll be walking on narrow streets with less than 1ft of space betwern you and a moving car.
Very close to Starita (the pizza restaurant), the Museum of Archeology, two metro stations, and lots of other things.
The apartment itself is great, very clean, had enough utensils, cookware, etc.