Great place to stay when visiting Florence. Exactly on San Marco Piazza, the apartment is still very calm with no noise at night (even with the road works on San Marco Piazza !). Perfectly suited for a couple with a baby (kudos to the very useful lift !!) with its 2 rooms, the place is clean, tidy and well furnished with all the essential. Duomo is at 10 minutes by foot, Ponte Vecchio at 20. You can do everything by foot, and like us with a baby, catch a bus nearby to get further if needed. Federico is very responsive, access to the apartment is very easy with the help of its father Mario. We had to change the building front door key : everything was easily arranged by Mario and Federico through text messages.
And finally: can you ask something better to have your breakfast in the kitchen staring at the Duomo and the Campanile ?