We took a taxi from the train station which cost about 10 euros. But we actually were able to walk to the train station when we were leaving which was about 15-20min walk (a little less than a mile).
We easily found the place with Guido's instructions. It is in a great location. There is a small cafe on the corner where we were able to get breakfast in the morning and buy water and coffee. There are many restaurants nearby, also gelaterias.
The place was very clean, neat and comfortable. We had everything we needed and more.
Guido was very responsive with any questions I had.
We were able to walk all over Florence to the academia, Uffizi, ponte vecchio and even down to the Piazzale Michelangelo.
I would definitely recommend to stay here. It was a great place, in a great location, and we really enjoyed it!