Starwood Preferred Guests can take 50 percent off room rates at Starwood Hawaii properties when they book and travel by June 3, 2007. Last-minute trip to Hawaii, anyone? At the Sheraton Maui Resort, that means the nightly rate drop from $540 to $270. At the W Honolulu Diamond Head, the deal brings rates down from a steep $585/night to a more manageable nightly rate of $293. If you want to book the deal, you’ll have to do so directly through Starwood (866-716-8141) and mention Rate Plan SPG50OFF.