We loved this apartment. It is so well located, just a few minutes walk to the Duomo or Piazza Santa Croce, the Uffizi. Even in 100+ degree weather, my husband walked to the Boboli Gardens and didn't have a problem, as Florence is very compact. Isabella provided great recommendations for local places to eat. The space itself was beautiful and clean, the laundry upstairs (with laundry detergent and a drying rack provided) was a big plus for us. We didn't use the outdoor space, but it was beautiful as well. We are a family of 5 and each of my sons had their own bathroom (so did my husband and I), which was very convenient. The bedroom off the dining room enjoys a lot of privacy, which was nice. Lots of natural light, all the modern conveniences. There is even a safe and Isabella provided two big electronics charging units, which made it easy for us to keep all of our devices charged!
Only downside we had, which has absolutely nothing to do with Isabella, is that taxi service in Florence is terribly unreliable. So plan accordingly when you are leaving the city-- leave lots of extra time for delays or no-shows.