We stayed at Lorenzo's place for 31 nights and had a great time. The place is situated across the road from Campo Di Marte Train Station, which is a short 7min ride into the centre of Florence. If you want to walk into the old city, (which we mainly did) it is only about 25-30min walk. Quite a few supermarkets near by and restaurants. We loved the fact that it had it's own private courtyard area as well and spent many an afternoon out there having snacks and drinks. Definitely a great location for a base to see other spots in Italy, such as Venice, Pisa, Lucca and Cinque Terre.