We had a very good stay at Elena and Paolo's apartment. It was clean and welcoming. The bed is very confortable. The hosts are friendly and attentive. They gave us a map of the city and made recommendations on what to visit and where to eat. They also left a big bottle of water for us in the kitchen, tea, coffe, sugar and other nice details.
It was in general a great experience and we would stay again when we come to Florence.