I really fell in love with this flat. It's very cosy and stylish and has everything for a comfort stay (kitchen and even bath stuff). The view and atmosphere is adorable and also the location – you can go everywhere by feet: it takes 5 minutes to get to Basilica of Santa Croce, 10 min to Duomo, 20 min to Train Station (S.M.Novella) and Piazzale Michelangelo. The hosts Remo and Marilena are very nice and will provide you with all the necessary information and they are really interested in your pleasure.
The one feature one should keep in mind is that the flat is on the 4th floor so some effort is needed to get there:) I dare to suppose the flat is perfect for romantic vacation / trip with friends rather than for a family with small child.
The flat can really accomodate 4 persons, it has one double bed and the couch turns into two mattress. I sleeped both on the bed and the couch and both are comfortable. As for the night life at this location, I spent 7 nights in this flat and only on friday/saturday I heard music and sound from the nearby bars, but everything stopped at about 1 a.m.
And I would also recommend to buy mosquito repellent cause you can meet them if you like to sleep with open windows.
I would recommend this flat to my friends with no doubt!