This was a wonderful place to stay for my two week "work-cation" in Florence. The location at Santo Spirito has more peace and quiet and a more local feel than areas much busier with tourists, and there are plenty of great places for coffee and meals nearby. The apartment itself has everything one needs for a slightly longer stay with a mix of remote work (good Wifi), and relaxation for 1-2 people.
I signed up for a gym membership at Florence Fitness, which is just ten minutes away by foot across one of the bridges.
Also great communication from Cosimo around my arrival and my departure, making for a smooth experience with no problems.
As for some minor issues: The bathroom could use a bit of an upgrade to the shower stall to make for less water winding up on the bathroom floor; bring extra adapters for your type C and type F power cords.