I have some "orphan" miles that I'd like to consolidate: 1500 on Alaska, 5000 on American, and 5000 on America West. I know that that's not a lot of miles; nevertheless, I'd like to "sweep" these balances into programs that I use (UA, Delta, or hotels).

Is Hilton the only hotel that will convert FF miles into hotel points? Are there minimum conversion amounts (I'm SPG Gold and Hilton Gold, if that matters.)? I have balances in Hilton, SPG, Marriott, and Priority Club. I fly UA exclusively, but also have about 23,000 Delta miles.

Thank you for any suggestions.