I love this apartment once I walk in. It's very spacious, with adequate facilities and great view of the old city. We spent an evening watching the sunset over the old castle of Florence on the terrace. Everything is within walking distance, museums, supermarket, etc.
Lorenzo is a great host too. He is responsive to our messages. He waited for us downstairs of the apartment, even our train was late for half an hour. The apartment is on 4th floor but the elevator only goes to 3rd floor (Lorenzo told us before we confirmed booking). Lorenzo helped us to carry the luggage to 4th floor.
I would recommend this apartment.