Thanks Cabaggio for the tip!

Marriott hotel name: Boston Marriott Copley Place
Check-in date: 02/20/15
Check-out date: 02/21/15
Marriott rate reserved: 229.00
Currency: USD
Lower rate found or reserved: 150.59
Currency: USD
Rate: $114.16

Guess I will be canceling my successful claim at Renaissance Boston Waterfront with this one, to be closer to center of town.