Fiamma is a great host, she went above and beyond. She was always available if we had any questions that needed answering. She often left us bottled water, which was a nice extra.
The house itself was just as described, most importantly clean and tidy. There is no air conditioning but Fiamma provided a strong fan which worked just fine.
There are bus stops and taxis 5 mins from the house. The 'centre' of Florence (where the main tourist attractions are) is a 20 minute walk.