Yep, bhrubin - tiny suite percentage means suite upgrades are a rarity here. Hotels will always try to keep back a few suites on the night in the hope they’ll sell last minute, and to use as “service recovery” in the event of a problem with a room necessitating moving a guest.
Personally I really like this property, great location and views, with a good lounge, it’s one of my favourite Marriotts...