Starwood is currently running a free week-end special. For the 1st 5 nights spent at any Starwood property, you earn 2 free Friday stays (exp Aug,2002, I think). The next 5 nights earn you 2 free Saturday nights. These are in addition to the points you regularly earn.
You can read more (and register)
here
An example---I spent 5 nights at the Swan in April, so I earned 2 free Fridays. I am going back to the Swan this month. On this stay, I am using one of my free Fridays, and will also earn 2 free Saturdays.
I will then have 1 full week-end + 1 extra Saturday night to use this summer.
So....we are going to spend a weekend in Chicago and use the free wek-end. ( at the W Chicago Lakeshore ). On our dates, the internet room rate is $209.00/night, so this is a really great deal for us!
Then, in July, we are going to St Louis for a week-end. I am going to use 3,000 of my Starwood points (Altho I haven't decided exactly where, yet) for the Friday night and then use my other free Saturday night.
The Starwood Preferred Guest program is a great thing!