I and my wife stayed six days in Robert's apartment in Florence in the beginning of September. Here is our opinion regarding this AirBnb place:
Location.
Apartment is very conveniently located in 6-7 minutes walking distance from SMN train station on the old quiet residential street. All main attractions like Duomo, Uffizi Gallery, etc located in the historic center of Florence are in close proximity to apartment. We didn't need any public transportation to reach them - just walking along the beautiful streets of Florence.
The other convenience is Conad supermarket one block away and many local restaurants and pizzerias around.
Apartment.
It is pretty spacious apartment: big bedroom / living room (we didn't need the second bedroom and it was locked), separate well equipped kitchen, bathroom with a good shower, big hallway. Place is not new but very clean and well maintained with air conditioner in the bedroom. And I would say, being decorated in historical Florence traditions, this apartment ads this additional art flavor to your stay - like living in one of the multitude of Florence museums :-)
Host
Communication with Robert was easy and clear. He gave us clear instructions how to find the location, met us at the apartment when we arrived, helped with our luggage, and showed everything around. Robert provided us with very useful information about the places to see, dining options around, some tips about shopping.
During our stay we were always in contact with our host and all our questions and concerns were resolved promptly.
We would recommend Robert & Elena as very nice and reliable hosts if you plan the trip to Florence.