In addition to what all of the other 5 star reviews say, we loved the balcony! Apartment is on the top floor of the building with a view of all of the main sights. Watch the sunset, drinking wine, while the bells from Duomo and others chime the quarter hour. The stairs were fine (we’re 70 y.o.), and you usually only climb them once a day. We stayed in Casa Colonna three weeks and highly recommend it for your stay in Florence.