We stayed for 4 nights at Francesca's place and we really enjoyed it. Francesca and her mum welcomed us on the first night and showed us the apartment which is cosy and very well equipped. Everything was perfectly clean. We were able to park our car in Francesca's garage, which was really convenient.
The flat is 1 min away from Santa Croce, 5 min from Palazzo Vecchio and 7 min from the Duomo. You can visit everyplace on foot.
The street was a little bit noisy but maybe this was caused by the "international market" which was held on Piazza Santa Croce for 4 days.