The apartment is great for couples visiting central Florence. It has a central location south of the Arno and is within easy walking distance to all the main sites and from the train station. It is so close to the Ponte Vecchio. Around the area are good (cheaper) restaurants and local trattorias that are frequented by locals and students outside of the main tourist area.
The apartment itself is compact but tidy and comfortable with nice clean decor and helpful equipment if you are staying in and cooking for yourself (also extra useful things like an umbrella and guide books!). The bathroom is spacious and has a very comfortable shower.
The apartment is up a few flights of stairs in an apartment block so you need to be aware of this when arriving with large bags to carry and not expect a lift etc. Francesca is a great host who drops the keys off and shows you around, giving you some great ideas for where to go and eat. There is also a luggage room so you can leave your bags in the block after check out and go out without too much to carry if your flight home/onward journey isn't until later on your final day. Overall, thoroughly recommended for a short city break in Florence!