We stayed for a week at Luigi's beautiful home with 2 families (2 toddlers under 2 yo) and had an incredible time. The apartment was extremely spacious and well-equipped with everything we needed and the terrace(s)/garden was a true sanctuary with spectacular views, fresh lemons and kumquats, and many types of herbs. The neighborhood was quiet and felt safe at night.
One note for parents of young children (or people with wheelchairs): the streets and sidewalks are narrow and can be difficult to navigate with strollers. Know that the most direct routes to the Metro/funicular involve lots of stairs. That being said, we learned how to get around just fine with some trial and error.
Overall, an incredible experience we would HIGHLY recommend to anyone looking for a truly elegant, comfortable, and memorable place to stay in Naples.