Jumper--did you go already?? Anyone else lately??
We're looking at 6-10th and a great deal at Alvear Palace($225/night premier room: jacuzzi, bfast, taxes, 1 dinner, 1 wine tasting, gym/spa access, champagne arr, butler....) We are still considering doing cheap, but this is kinda once/lifetime--we can always come back for some charm like Miravida Soho or one of those Park Plaza properties if they discount. This has the 21% fee included which is a big chunk.
I'm too spoiled/old to really cheap it. I have to cut/paste lots of old info here--can't wait for you to add more new stuff!