The wooden frame of my bed creaked a lot, and broke when I tried to move the bed around. Also, in our room at least, the TV was positioned so it wasn't comfortable to lie in either of the beds and watch it.
Those are minor issues however, the overall experience was very positive.
B&B Del Corso is great hotel, about a 10 minutes' walk from the Stazione Centrale in Naples and close to the many churches and landmarks in the city's historical center. My friend and I stayed here for 3 nights. The room was nicely decorated and comfortable, with a large wardrobe and a large flatscreen TV, and the bathroom was particularly spacious (you could fit 3 people in the shower). Despite being on a main, busy street, it was quiet at night once we shut the window.
Breakfast was served to our room, although you can choose to have it in the small smokers' area outside: it was very good and had a decent variety. We got to choose which items we wanted in the breakfast beforehand by filling out a form.
Most importantly, the hostess (although her English isn't the best), her son and her daughter were very accommodating and kind. They were happy to give us advice about our trip and otherwise help us with whatever was necessary, never making us feel like a burden.
On top of everything, we only paid 201 euros for the room for 3 nights (breakfast included) which was an absolute bargain, even considering it was the "off-season" (November).
Overall, I would highly recommend this place to any friends or family travelling to Naples.