I was actually booked in again on a reward stay. I then started looking at Marriott options (I was never a Marriott person and it is only via SPG points I can book them).
Lo and behold, JW Marriott Essex House is only 45k Marriott per night, has just finished a full refurbishment and will give me club access as Marriottt Gold (matched from my SPG Gold). And brekky seems to be in a reserved area of the main restaurant with pretty much the same spread. Have decided this is better value than 70k per night (less 10% Ambassador rebate) at the Barclay, room only.
Note Essex House has a $25 resort fee but comes with a $25 food and beverage credit so I can just about live with it.