Cost of living in Florence (Italy) is 7% more expensive than in Andorra la Vella (Andorra)
This comparison is lacking data. It provides a decent comparison, but it is not yet reliable. It is based on 299 prices entered by 42 different people.
For example, you would need at least €3,221 in Florence to maintain the same standard of living that you can have with €3,000 in Andorra la Vella.