tl;dr – An offer for easy savings at several SLH hotels in the Americas, Europe, and Asia.
Amex released a slew of new offers today, and there’s a good deal with Small Luxury Hotels of the World:

And here are the full terms of the offer:

You can view the full list of participating properties here.
As a reminder, SLH hotels are bookable through Hilton after the great partnership swaperoo of 2024. While the details of the deal indicate you need to book at SLH.com, I wouldn’t be surprised if this offer triggered at properties on this list that are also bookable with Hilton, so long as you 1) added this offer to your card, 2) paid with it at checkout at said property. Not a guarantee that this is the case, but you might be able to double dip here.

If nothing else $100 off $300 is not a bad deal.