The apartment is very spacious and in a great location (10 minutes to Plebiscito and ca. 15 mins to the Lungomare). I spent a week there with my husband and his family and we had all the space we needed (the two bathrooms came in especially handy :)), plus two cozy balconies! Raffaella was very helpful and check-in and check-out went smoothly. If you're travelling as a small group or as a family, Raffaella's apartment is perfect. There's also an elevator in the building, and even a garage, though driving in Napoli is fairly stressful and the city is quite walkable. It helps to speak a little bit of Italian, though, as not that many people outside of the main tourist areas speak English.
All in all we had a great time, and we'll definitely come back!