The Sheraton at FRA is also available using cash ($60 USD) and points (4000 SPG Starpoints) pretty frequently. It's not too hard to come up with SPG points with various promotions, if you have most of a year to do this, and you can stay at a Starwood property or three between now and then. For instance, SPG will give you 2000 Starpoints on their best rate guarantee. These can be some of the best uses of Starpoints- to make obnoxiously expensive properties quite reasonable.