Celesta's home is really special and I highly recommend you stay here if you can. We had one night in Naples and we're really glad we got to spend it here as her home is incredibly unique and beautiful (and has a very cute cat, Sophia, who was an added bonus). The house was spotlessly clean, stylish and comfortable. Celesta's mum met us when we arrived and was very kind and welcoming despite the language barrier, welcoming us to a glass of wine later that evening before we set out for dinner.
Celesta's home seems to be a cultural hub and they actually were hosting a concert the night we were there, which was a cool experience.
The bedroom has a private bathroom which is large and clean/comfortable, and the bedroom itself is spacious with a balcony looking out onto the beautiful internal facade of the Palazzo. The bed is very comfortable, and like the rest of Celesta's home, the room has lots of eclectic decorations/art.
The house is situated on a VERY busy street where you'll get to observe the hustle and bustle of traders during the day and genuine Neapolitan life. Despite the life of the street, there's no problem with noise as the entrance to her home is through a courtyard that brings you in off of the main street.
It's about a ten minutes walk from two different metro stops so very accessible from Naples Centrale. I recommend a stay here!