Vanna's flat was better than advertised! My husband and I stayed there for a week in September. The space looked just as it did in photos, and is really a quite large apartment, so charming and a wonderful neighborhood. We had no trouble finding it and Vanna was there waiting for us, even though we were much later than we had said.
The kitchen was incredibly well stocked and easy to cook in, it was very fun for me. The bed was firm, but that's how we like it :) there was SO much closer and drawer space, we unpacked and really felt like we were living there. We had a slight problem with the shower clogging but were able to fix it with a bit of plunging. The whole flat is just very well suited for guests and makes it feel like you haven't left home. We also felt very safe there, with deadbolts between us and outside.
The flat is a very doable walking distance from the center, about 15-25 minutes depending. We just loved the local feel of this neighborhood, especially the Piazza di Santo Spirito markets and restaurants (Casalinga was superb!). It is also on the same street as a very nice restaurant Trattoria Diladarno, and a wine bar Fiaschetteria.
We just loved staying here, it helped make our stay in Florence so wonderful!