I have stayed with my friends in Anna's apartment for a long weekend, and we enjoyed fully the place as well as Napoli. The house is well located at a walking distance from all major-attractions, and has two big bedrooms that are so confortable especially in cold nights. The kitchen and living room are big as well and will give you this nice feeling of being at home.
If you are going to Napoli, I recommend you definitely to stay at Anna's appartement, you will love it!