If you were to add a "hide this result" capability to a site like Airbnb, how/where would you do it?
i.e. you search and get dozens or hundreds of results and start to drill down into them. While there are some you want to "heart"/favorite, there are many you want to hide and never see again, such as if you modify your search locations or budget, etc. This is particularly useful because most users tweak their search multiple times (e.g modifying locations, budget, bedrooms, etc) yet a lot of the results are the same every time, including ones they've already looked at and ruled out. I would instead like to save them from having to see ones they already know they don't want.
Today on a site like Airbnb, they have the heart icon at top right of the photo. If I were to add a hide icon (e.g. trash can), what would be the best UI for that? i.e. I could locate it to the top left with equal prominence, or switch it to the top left and have trash at the top right instead, so that the heart comes first, like this:
The actual icons used are not too important here (and have been discussed in other questions in this site) but rather what the best UX is for users.