I think there are some attractive rates at the Westin Puerto Vallarta under this rate code. For example, I checked early December, King room for 4 nights.

Prices out at $169 per night and 4th night is comped. (3*169 = $507)

That translates to $126.75 per night.

And, with a $200 F&B rebate applied over days, you could consider that a $50 rebate per day (if you're inclined to eat/drink there anyway). If you're willing to make that "stretch" the $126.75 - $50 = $76.75 per night. Not at all bad, especially if one is a SPG PLAT this property has a decent breakfast/afternoon lounge.

NOTE: many of these F&B credits will not allow the credits to be applied to breakfast.