The location of the appartment and the assistance I got from Barbara were both excellent.
The apparmtment itself, however, needs a little TLC.
Firstly, the virtual key access to the building was never needed because the front door remained unlocked throughout our entire stay.
The unit lacked the very basic nesessities for a family of 5 staying 4 nights (i.e, only 3 rolls of toilet paper, kitchen napkins, no broom, no clothes drying rack to dry clothes).
On arrival, no snacks nor bottled water was provided (just one bottle of tap water was in the fridge.
Liquid soap was provided but without facecloths (!).
Kitchen faucet aerator sprays water all over the kitchen counter.
Knobs missing on the main bedroom dresser (so we could not use 2 drawers of the dresser)
Very noisy courtyard for the second bedroom in the corner (whirring noise from the air conditioning compressor, noise coming from the neighbours) because the wooden doors accessing the courtyard are not soudproof.
Mirror in the second bathroom was broken.
We felt we didn't get our value for the 500 €/night we paid considering that we spent the previous 4 weeks in various other rentals in Rome, Montepulciano, Montalcino, and Venice, that far exceeded our expectations.
Our communication with Barbara was great, but it was our impression that dealing with a rental agency (we didn't meet the owners) makes the experience colder and more impersonal.
This is after all Florence.....and we expected more for the price.