Perfect for a large group, this apartment is spacious and beautifully decorated. Everything was prepared for our arrival, the lady met us at the entrance and explained how to get to several interesting sights. Location is great near the city center, we could reach everything by walking, including the famous pizzerias.

Generally the apartment was clean, including bed linens and towels. The two bathrooms could use some general maintenance but are clean enough. Beds were comfortable and the kitchen and living-room areas nice and large for the entire group to sit at the same time. They provide wi-fi, but for such a large apartment it is slow and doesn't reach the bedrooms.
The water heater only works for one of the two showers at the time, which is a challenge for such a large group of seven.
Be aware that you have to pay the city tax at arrival; this was mentioned in the email they sent but somehow the info got lost among all the offers for tours and transport prices; so we had that as a surprise (not their fault though).
The entrance to the building and general staircase area are ugly and not too clean (this can give you an initial bad impression), but once you see the rest of Napoli you sort of get used to it.
All in all I would recommend staying here, it is a beautiful place and very conveniently located for tourists.