Agostino's place is a nice old house with several rooms. It's about 30 minutes walking distance from the city center (Piazza del Duomo) but the Boboli Gardens and the Porta Romana are quite near. Also there is a bus station about 4 minutes away. Agostino is very friendly and helpful host. He lent us books about Florence to help us in our sightseeing, he gave us bus tickets (that we paid him obviously, but we didn't have to search for a place to buy tickets) and when we were leaving he offered us fruits in case we get hungry on the way. The room was nice and cosy, even though it was rather cold outside the room was warm and pleasant. Overall a great experience, I recommend it.