We've spent 5 days in Florence and it was a total pleasure!
The apartment is bright, cute and spacious, and it's basically 5-10-minute walk to anywhere you'd wanna go:) There are several bus stops nearby so you can easily get to the place from the train station.
And the most important part is that Silvia was very friendly, attentive and helpful, she's a great host and whenever I visit Florence I'd be happy to stay at Silvia's place again:)