The sweet and short trip to Florence went great, the apartment is comfortable (I slept like a baby), and the location is fantastic, because public transport of all kinds (train, tramway, bus) is very close, 5-6 minutes walk. I especially recommend this apartment if you come by car. Also, good tratoria/pizzeria is located right on the corner, and supermarket is also near.
Su is incredibly kind and considerate, tries to answer all the questions and, all in all, we felt just like at home.