This is a great apartment in a superb location. All the attractions of Florence are within walking distance (20 minutes walk from the railway station, with luggage - but early morning and no crowds) and it is quite convenient to pop back to the place for lunch. Being by the Arno, both banks of the river are accessible. The apartment is equipped for long-term stays - we cooked in the well-equipped kitchen once (though many great eateries are within walking distance) in the evening but had most lunches 'at home). The air-conditioning works well and is quiet. Susan is a great communicator and was able to accommodate our request for a last-minute increase in the number of our guests. The apartment is spacious for two and fits three easily using the sofa bed.
Francesco met us as detailed - though Susan provided multiple other contacts in case things went awry. The apartment was very clean and I would have absolutely no reservation in recommending this to anyone. If we are back in Florence (and we certainly would like to be) then we would love to stay here again.