Hmmm, weird, scrolling down my Watch List none of my items ever show the location. Yours do? Weird. Well as you know, when we click on the listing, over on the right under Other item info it says Item location. If you have a wee bit of spare time, what you could to is add a note to each item. So when you're in your Watch List, on the right of each item you'll see More actions. Click that, select Add note, type the location, Save, and although time-consuming it is a way to have a clearly visible location of each item in Watch.