We stayed at this appartment for 5 nights during New Years. The location is very good with great reaturants nearby and points of interest within walking distance. The communication with Francesca was very good. She arranged transport from the airport, gave us an early check-in, advised us where tot stow our luggage on day of departure and arranged maintenance quickly when we had small problems with wifi and warm water.
As for the appartment itself; it is bright and spacious but in need of some serious renovation. The bathroom is full of mold, the drain of the toilet is loose and in the bedroom the plaster is coming off. Also the couch was with stains and grubby. We didn't use the kitchen so I cannot say anything about it.
My advice for a 5 star rating: do a full renovation on the bathroom, put a bunk bed in the second bedroom and buy a nice couch for a cosy seating arrangement. Also a plant in a nice pot will give the appartment more allure and a homely feeling