I don't think anyone is "counting Dearborn out"; however, I don't see any need for a massive 800-room convention hotel in this location [[or really any location in SE Michigan).
Yes, there's Ford HQ attracting some guests, but I don't see significant additional corporate or leisure drivers. U-M Dearborn is a commuter campus that's 20 minutes from pretty much all the existing local hotel submarkets, and the Henry Ford isn't going to draw much overnight business.
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