Giulia is very friendly and helpful, always replying promptly and with relevant information. The apartment is perfectly located in the centre (when you open the door you can see the dome of the cathedral!). The place was very clean and comfy, with all you need. It is well insulated with a ventilator and dehumidifier. However, we stayed there in a really hot period in Florence (38/39 degrees Celsius) and it was a bit warm in the night.
Apart from that really recommend staying here!