We had a very nice stay at Antonella's appartment. There was everything we needed in it, plus some fruit, cakes and milk. Antonella was very nice and helpful: she got our lost luggage when it was delivered by the airport (thanks again) and got little gifts for the kids. I did not know what to expect with the stairs: we went up and down twice or more a day with a kid in one arm and a stroller, and it was not tiring. But still, it is for active people. There is a nice park for the kids nearby (not a lot in Florence).