We spent the night in Naples because our EasyJet flight from London got in too late to continue to Sorrento. We also planned to visit the Archaeological Museum, to see the actual statues and frescoes from Pompeii, which was on our Sorrento itinerary. We booked directly on their website.
One reason for this choice was that it is halfway between the Centrale Train Station and the Archaeological Museum. Some people don't want to walk that far - so don't think I mean it's "near" either of those. But many Naples visitors want to experience the street, and view the vendor displays.
We got to the hotel from the airport with the 15 Euro flat rate taxi fare, mentioned in the hotel's confirmation email to us-good advice. The hotel does look like a medium-sized, old palazzo. But the interior has been entirely gutted and renovated in the modernist style of marble-tile/glass/blonde wood. Every inch is like this. We paid 200 Euros for a Deluxe Room (#104), which is 2 on a scale of 1 to 4. The Classic room, 4, is 140 Euros. Our room was immense, with all new built-ins and furniture. The bathroom, with gorgeous, expensive new fixtures, was big enough to hold a party in. Internet was free. The double-glass windows kept all noise outside. We had two Juliet-balconies over the square, which was a dusty mess of legal and illegally parked cars - not a statue or fountain in sight.
The breakfast room was also spanking new and shiny, and there was an adequate supply of hot and cold European breakfast items, with fresh breads. The buffet wasn't like a luxury hotel, but it was well above the tourist-hotel level of choices - all pre-prepared, except espresso-to-order. Upon checkin, they gave us two free bar-drink tickets, and the bartender gave us small hors d'ouvres.
We were happy to be so quiet and comfortable in a gritty city. I know you may not want to pay this much. But I'm sure the double-glass and bathroom fixture brands are the same in the smaller rooms. Air-conditioning was good.
In the morning, we checked out on time, and left our luggage with the front desk. After a pizza lunch, we picked up our bags and rolled them ourselves about 3/4 of a mile (over plenty of cobblestones!) all the way to the Circumvesuviana station (downstairs at the Centrale Rail station.)