The location couldn't be any better. You will be about 12mins walking to the tourist area, however, you are surrounded by a lot of great restaurants (Dan will send you a PDF with a couple suggestions for food- try the Fiaschetteria Di Pesce which is right across from the AirBnb-the best seafood pasta I have ever had).
You will have a whole modern place for yourself. Dan was very kind leaving us a lot of pillows to choose.
Tip: if you are traveling from the US, there are many places in Florence that give you good exchange rate. We checked out 5 places and instead of giving us €85 for $100, I only got €65. So be aware of that. However, everywhere takes credit cards so I didn't have problem spending money.