Jacopo's Apartment was a wonderful stay!
Described very well and accurate. A/C worked wonderfully, the building itself was amazing with lots of history, great location, good access to wifi, very clean, fast communication, great bathroom, nice small kitchen with refrigerator, and amazing views of Florence and the duomo.
We didn't bother getting bus tickets and such because everything seemed like a 20-25 minute walk, good location and we felt very safe with all the locks and doors. This place feels like you're staying in a museum/mansion, very unquie and cool.
There are a few small flights of stairs you have to carry your luggage up but there is an elevator that does most of the work.

The only cons I can think of is having to drag your luggage to and from the station. It's not a far walk, but with luggage, the small sidewalks of Florence, uneven surfaces and heat make the short walk become long and bothersome. If this is a bad factor for you, I would recommend getting a cab to and from or catching a bus.
A few mosquitoes so watch out for that, and keep windows closed.
The washer stopped working after we used it once but we found a cheap washeteria right down the road.
The check-in was a little delayed even though we arrived after the recommended time but we got to talk with Jacopo's father(Roberto) and had a great time discussing their rich family history.
The Pandolfini family is wonderful and have lots to share if you're interested. I hope to be back in Florence soon and hope to stay here again.
Grazie Mille Roberto!