The place is close to both stations and 5 minute walking distance to the bus stop. You can get to the Dumo, Central Train Station and even the Leather workshop which I recommend (Scuola del Cuoio) by bus. We actually walked and it was fantastic. Its a treat to walk in Florence and you come across the true beauty of the city.
Enrica's was very patient with us, we arrive at 11PM from Paris and both her boyfriend and Enrica waited for us. I love this about Italians they are so friendly. Also to avoid confusion her apartment is in the YELLOW building on the 2nd floor or 3rd floor if you are coming from north america. I state this so in case people get there they dont get confused as to which building. Cant miss the yellow one. Recommend you google it when you get the address. The bed was fantastic! The living room is just what one needs to put up your feet and relax. You are in a quaint area and experience a true Italian suburb yet its so close to every site one would like to visit. I recommend staying here than close to the hustle bustle of the attraction places unless you are a party goer and want to be out till 2AM.