The opportunity cost for a 2 night reward is about 70,000 points. 65,000 in redemption cost and roughly 5,000 in earned points for 2 nights at $199, assuming some points for an elite bonus and/or using the Marriott credit card.

The value of a point in this award is around .65-.7 cents, including tax for the room rate. It is easy to get awards with points valued at twice this amount.