Staying with Cristiana and Marco was a great Italian travel experience. They are very kind, caring and helpful hosts who make you feel very welcome by sharing breakfast with you. The two guestrooms that they rent out are very private in a separate part of the apartment. My room was spacious and comfortable with a great bed and place for everything. It was very good to have acess to a fridge and kettle.
Their home is in an excellent location; out of the busy part of the city centre yet within easy walking to the main attractions. It is also close to the train and bus station which makes it easy to go on daytrips outside the city. The closeness to the Arnó river is also a major benefit.
I consider it a great luck to have stayed at Marco's & Cristiana's home in Florence. I give them my best recommendation without any hesitation.