tl;dr – An offer for easy savings at Langham properties in the US or London.
Amex released a slew of new offers the other day, and there’s a deal with Langham Hotels:

Note that this offer is valid for Langham properties within North America and London (and it’s unclear if sister properties like the Chelsea Toronto or Eaton DC qualify, but I doubt it), so you’ll want to keep that in mind:

As with all Amex merchant offers, you’ll want to add the offer to your card in your Amex dashboard before making your reservation at the property.

I haven’t spent too much time with the Langham chain, though I hope to change that in the near future. The Langham properties that are of most interest to me are outside of the US and London, though, so unfortunately, this offer wouldn’t come in handy for those stays.