LondonHouse Chicago, Curio Collection by Hilton:

Booked a 1 King Bed room (316 sq. ft.) - Checked in day before on app and picked corner room on 17th floor with view of river. Stayed here a few months ago and liked this room and view.

Upgraded to 1 King Bed Corner Studio (424 sq. ft) - Received notification of upgrade and digital key around 1300 day of arrival. Room received was on 5th floor and barely has river view. Also, the room really isn't in the corner... surely I could have asked to switch back to initial chosen room, but I'll take this rare "upgrade."