Annarita and her mother greeted us when we arrived with glasses of wine and some snacks. There was tea and coffee, and mineral water in the fridge.
The apartment is very spacious and bright, exactly as advertised. It was VERY CONVENIENT to the Metro and regional trains (~150m from Campi Flegrei stazione). The elevator was tiny, but perfect for getting heavy luggage upstairs. The bed was comfortable, too. We also enjoyed the excellent shower.
One drawback, though it was not nearly enough of a problem to take away any stars, is that the bedroom faces the street and therefore had both noise and some light at night. It didn't bother us at all, even after a Champion's League soccer match down the street, but if you need silence or darkness to sleep, bring ear plugs or a sleep mask.
We would definitely stay here again.