Billy, I take it you were able to directly book a suite for 15,000 points? That's quite a deal!
I just booked a double double "2 Double Beds, Metro View Room, Non-Smoking" room, running $368 before taxes / fees during our 2-night, late October stay. I'm not sure what the difference between this and the "2 Double Beds, Metro Room, Non-Smoking" room is, other than that that room would be $332.

No suites were available for Go Free awards.
I am Diamond, so should be entitled to suite upgrades if available, and a visitor's amenity (for Go Free Diamond guests). Anyone know what those offerings are like?
The recent tripadvisor reviews on this property are strong, so this seems like a good use of points. I was surprised to see that bookings for next weekend, May 11-13, are running only $140 a night.