If you are a solo traveler in Florence, I highly recommend Bea's place. She has a nice suite set up. There's a beautiful view of the Duomo.
My train to Florence was three hours late and I didn't get in till midnight. Bea waited up for me and made sure I got there okay. Then she made sure I was enjoying my time in Florence.
Bea's such a kind soul, you will definitely love your stay here.