The Chase offers were originally scheduled to end on 9-9 or 9-09, but have now been extended to 9-24, giving them more time to use them.
When you spend at least $100 for a stay at Hyatt Place, you will get 15% back. It doesn't have a high spending limit, but there is a way to get around it if you've been targeted for it on more than one card.
When you spend $253.33 on room rate and room charges, you'll get the maximum $38 back. If you are booking a more expensive stay at a Hyatt Place, there is a solution that could be found.
Chase allows you to load and redeem Chase offers on more than one card if you have a specific offer on multiple cards. You can ask a hotel to split the cost of your stay so that you can get more credit for it.
If you don't have a Hyatt Place stay planned before the end of the offer, you should be able to buy a physical Hyatt gift card from a front desk to lock in the 15% discount.