If you have the opportunity to stay in Florence and this apartment is available, book it.
The apartment is as beautiful as the photos. The view is really unique and made the trip more special. We would sip coffee and watch people go about their day on the square below. It is very clean and well furnished.
It is in walking distance of everything you will need for a week in Florence. Easy access to supermarkets and wonderful restaurants. A short walk from high end stores like Louis Vuitton and Hermes and similarly 2 minutes from local markets.
It is within walking distance to the train station and tour bus depot.
Mirko offered coffees and access to his bar which is really special.
I would highly recommend.