Anantara, which has previously had at least two separate sales of stays/certificates, has launched a new global one that is valid for purchase made until July 22, 2020.
You can buy stay certificates at a variable discount, and these certs are valid until sometime in 2021 (see individual expiry and blackout dates).
You can access this offer on Anantara’s website here.
Here are the hotels on sale:
Difficult to tell what is the usual price of these hotels and experiences. Some of them seem rather high, although the amount should be “off.”
The Anantara Riverside used to be a Marriott a while back. This certificate sale price looks roughly what I paid there a couple of times.