The apartment was in a great location, about 10 mins walk from the main train station. The flat itself is massive! The only downside was that we only stayed for one day - this is definitely a place you need to stay for two to get the most out of it. It's super clean, packed full of all the necessities, and even has a TV with Netflix (if you need to go back to the apartment and chill out for a bit).
Marco was super helpful and gave us all the tips (and more) that we could ask for! Can't recommend this place enough. We'll definitely stay here again if we come back to Naples :)