This apartment is everything you need for a stay in Naples. It has everything you need for a comfortable stay - cooking equipment, separate bedroom, lounge area, and two street balconies. It is just off the main street and 3 minutes walk from the famous train station Toledo.
I feel this is a great centre location for your travels, you can go walk 10 mins to the historic centre, 25 mins to the castle on the hill that overlooks Naploi and the shopping district that is behind the castle (its also a great walk for lots of city views) and then again 5 mins to the local shopping district and a further 5 mins to the local night dining and drinking areas.
Of course, the streets are a little noise but that is Naples and you should immerse yourself in their local culture and lifestyle.
Beautiful City and beautiful stay.