I wonder how important Naples's local issues really are for a tech startup. Naples has a pretty bad reputation, but it's mainly about public services like waste collection, sanitation, water and infrastructure.
If I were starting a construction company or a restaurant there I might be concerned about mafia involvement, but as a tech company I worry more abut Italy's general bureaucracy and its broken legal system.
The somewhat baffling political situation doesn't exactly inspire confidence either (although I suppose I shouldn't be throwing stones from my UK glass house in that respect)