If you happen to have a Marriott Rewards number, mention it, and there's a special offer where you can get the weekend for a few extra $$ off per day. I got my reservation combining several spec. offer days and a couple of DSWE days. (First time I actually got some use out of the card.)
You can look up
www.marriott.com and sign up for a card online.
Same thing as the other rooms, up to 4 allowed in a room at that rate.
Even at the DSWE rate, it's still a far better price than last year's in the city. (That was the best deal too, less than the lowest available to MR members, so you can imagine what the real prices are like.)