Cost of living in Florence (Italy) is 9% 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 306 prices entered by 47 different people.
For example, you would need at least €2,821 in Florence to maintain the same standard of living that you can have with €2,600 in Andorra la Vella.