I was looking to redeem Starpoints last week in the Newport/Providence area. Focused on the Westin Providence which had no cash and points availability, only 10,000 points per night. This would have translated to 2.9 cents per point at $209.00 per night.
So I tried Priceline and got the Renaissance Providence (also a four star selling at $209.00 ) for $58.00 per night , $71.00 AI per night and saved my 30,000 SPG points.