Obviously, the location is great! 15 minutes walk from the train station, Cathedral of Santa Maria del Fiore is literally around the corner, you are just in the middle of everything.
Just have to warn people that if you are booking through Expedia, make sure you check your email (spam too) before arrival. Make sure you get the email with the check in instructions. I missed the email, so when we get there we had a hard time finding the place (it's not a hotel, so there is no marking outside the building), everything was locked, and we didn't know how to get in. Finally I called the owner, and she gave us the codes to get it. Later I found the emails with all the information. Everything turned out okay, but it was stressful. So, make sure you get the email.
The rest of the stay was great. The room was clean, good size bad, nice bathroom. A\C didn't work the first night, then they fixed it, but it was still a bit hot in the room.
There is no breakfast included. If it's a B&B (bed and breakfast), it should include breakfast. I guess you can purchase a voucher from them or something, but we just chose to find a place to eat on our own.
Nevertheless, the room was great and the location is amazing, so would definitely stay again!