Glad to hear from someone who's been to both.

It's just not often that a hotel gets bumped up so many levels, from a Holiday Inn to a Hyatt Regency. Usually reflags involve moving laterally, to a similar brand, or down, not multiple tiers up.

And yep, I posted about the Sheraton Centre's Four Seasons origins a few posts earlier, including a vintage ad. I actually wrote a lot of that Wikipedia page, haha.