I stayed in the apartment for a month (with my cat) and really loved it. Great location to walk to all the sites but away from the crowds and the noise. The hosts are really kind and accommodating and are happy to help throughout your stay. The apartment is bigger than I expected and has a lot of storage space to unpack your bags and good wifi for anyone who needs to work.
I was there for the month of July and it was extremely hot. I knew the apartment didn’t have AC when I booked, but if I were to do my trip again I’d consider spending the extra money on a place with air conditioning. The hosts provide fans and it cools down a bit at night, but worth noting it is very uncommon for Italians to have screens on their windows so if you sleep with them open expect mosquito bites and the occasional moth. Walking around Florence I saw several tourists covered in bites so I don’t think this is an uncommon experience throughout the city and worth it to be able to cool down.