We stayed here for 2 nights. Wonderful location, just a stone's throw away from Arno River and around the corner to the Uffizi Gallery and other great attractions. We were happy with the place. It was as described. For us, it was more than adequate because we were only there only to sleep at night. There is so much to explore in Florence. I wish we had more time.
Check in was a breeze. Federico was in touch and we updated him with what time we were coming. We called the number he provided as soon as we arrived in Florence and Federico's associate was there to meet us at the apartment. She gave us some useful information and she was very nice. There's one flight of stairs going into the apartment which is not a problem for us because we packed light and only have carry on luggage and backpacks.
The wifi was good and adequate. We were actually quite happy it worked. We previously stayed at a hotel in Rome with "free wifi" that we could never connect to so Federico's wifi was a blessing. The bedroom has two twin beds which we thought was very comfortable. We had no problems with it. Everything was as described. Bring your own shampoo and conditioner. The apartment seems pretty furnished (though we didn't use most of the amenities but the kitchen is furnished if you want/need to cook and we saw a washing machine but didn't need to wash our clothes.
Overall happy with the place. It's a good value for the money.