This is the new ranking of Italian provinces for “Quality of Life”. Northern Italy wins hands down. The province of Trento is no. 1.
https://www.italiaoggi.it/news/qualita-della-vita-trento-la-migliore-d-italia-201911171115217909
Below is the information on the long term visas for Italy, including the Elective Residency visa.
https://conssanfrancisco.esteri.it/consolato_sanfrancisco/en/i_servizi/per_i_cittadini/visas.html
Although Southern Italy apparently scores low in quality of life, however the south has better weather and climate. In addition for the first 6 years the Italian Government has a low tax regime (7% flat rate) for foreigners willing to relocate in smaller towns (under 20,000 pop.) in southern Italian regions.
https://international-adviser.com/italy-lures-retired-foreigners-with-low-tax-regime/