I personally think this would be a pretty cool feature to add.
That could be cool. I'm not certain how many would like to see it but I think it would be a nice experiment.
Yes. I do so much research when selecting a hotel. Having them listed would refresh my memory of their location.
You can save your favorite hotels in your Rewards account and they'll show up for you below your "Last Activity" area in your account. Also, you get badges in your account for each different brand you stay as well as the location of them just below and to the right of your "Saved Hotels". Click on the "View Badges" link on the right side of the page and poof, there you have it.
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