Our staying at Alejandras place was very pleasant. The flat was nice and clean. Communication with the host was easy. She was very flexible with our check-out , which was really cool for our staying experience.
The flat is a bit outside of the center but that was not a problem. You might need to take a taxi, only if you are not keen on walking a bit longer in the night or taking the bus. The area is still cute and not packed as the center.
Compared to other available and more expensive options in Florence I would suggest this flat for the space it offers and the good communication with the host.