Starwood is offering up to 50% off prepaid bookings made by March 23 for stays through September 7.

Details will vary by hotel. Some have a maximum four night stay, others especially resorts a maximum seven night stay. Not all hotels participate, and various restrictions apply at those who do, such as only Thursday – Saturday arrivals at some predominantly business hotels.

Moreover, the rate under this offer will not always be the best possible rate — definitely best to price out hotels on their own and then under this offer and compare. Still it will represent a good savings at many properties when eligible.