Firstly, Carlotta was very quick and very responsive. Her apartment was very centrally located and it was extremely convenient to arrive via Firenze SMN station. It is very close to the Duomo and Accademia, and legitimately across the street from Mercado Centrale. The apartment is large and airy, with large windows, and good WiFi.
The not-so-great things: the previous reviewers were too kind about the “city noise”. Living in a metropolitan area, there is customary pedestrian or traffic noise with the occasional sirens; we are accustomed to that. We are normally heavy sleepers and thought we would be fine. However, there is a dance club/disco beneath this apartment, that is open until 4am the Sunday night we stayed there. Earplugs are NOT optional here. Be more prepared than us, and you will have a more pleasant time.