My girlfriend and I visited Firenze for a weekend and stayed at Alfredo's place. The apartment is small but cozy, and has everything one may need: we found a bottle of Chianti wine for us and many things for breakfast (biscuits, plumcake, milk, tea and even a coffe machine). Alfredo was super kind and always helpful with us. We spoke on the phone and he gave us many useful tips on Florence's nightlife and restaurants.
When it was time to check out Alfredo was very flexible with the timing and let us leave the luggage there, permitting us to enjoy Florence for a couple extra hours without carrying bags around.
I would definitely recommend this apartments to couples or small groups of friends.