I'm doing the same search for a few weeks from now and I'm getting the same results.
For this:
$172 (regularly $431)
rating 9 out of 10
==> Sheraton Grand London Park Lane
I noticed that hotwire states that it only has 301-500 tripadvisor reviews for this option (assuming it's the same). How accurate has this been? If so, that sounds like a great guess as it has 311 reviews. I was about to write that it was not a good guess because I strongly assumed that a Sheraton would have way more reviews, but I couldn't be more wrong.
