The AC Hotel Firenze (Florence, Italy) has loaded a number of good rates for the winter season starting in November until January 2016.
The rate covers most Friday/ Saturday/ Sunday nights.
The hotel is a short 10-15 walk to all the tourist attractions in Florence. It fetches a lot of good reviews as well.
If you are paying with Marriott Rewards points (not a good idea in this case) you would need a stunning 35,000 points for the hotel!
You can book the AC Hotel Firenze here.