Don't compare Naples to Florence, Venice and Rome. Prior to 1863, Naples was the capital of the Kingdom of the Two Sicilies. Naples is a deposed capital which only 150 years ago was a European capital city second only to Paris in size and sophistication. Europe's first opera house is here. Pizza was born here and can be found on nearly every street corner. It's UNESCO designated historic center is the largest in the world and much of it has been pedestrianized which is of enormous benefit to tourists.
How to get to Naples
Fly to Capodichino airport or take the Freciarossa (the fast train), only 1 hour from Rome. Most of the historic center of Naples is a pedestrianized so renting a car for your stay in Naples is not advised. Taxis are available throughout the city. Don't take outdated stories about nefarious taxi drivers too seriously. The white taxis are metered and there are standard, regulated fares.