Giuditta & Cosimo have an awesome studio around the corner from the Ponte Vecchio. Very central and walkable to the major sites and shopping. They had a great list of recommendations for cafes, restaurants, shops, everything! We definitely used it and had great experiences. It was hard for us to leave because we really loved the location. (If you're a light sleeper, bring some ear plugs - the early morning trash and delivery trucks can be loud)