Linda's flat is on the other side of the Arno in a quieter part of town and was adequate for the three of us. We didn't meet Linda but she responded to our queries promptly and her airbnb page also had useful information. She provided three sets of keys which was very useful. There is a very good supermarket near the Ponte Vecchio which opens late, useful for breakfast and other things. Alternately, the bar downstairs does great macchiatos and brioche.