Marriott has their booking platform for short-term rental stays. They rebate part of the commission they’re generating in the form of points and elite credit. Hyatt is getting into this game as well.
Capital One now has an interesting play in the space. You can already redeem Capital One Venture and Venture X (and equivalent business card) points to pay for short-term rental stays (such as Airbnb). But they’ve got their own STR ‘collections’ now that come with enhanced earning and benefits.