Best resource I know of for most questions like this is the mileage converter at WebFlyer. Unfortunately, it does not give conversions out of DMs, which leads me to believe you can't convert points directly. Points.com also allows some conversions . . . US is a member but apparently Hilton is not, so that wouldn't work for you either.

I checked on the US Airways web site and it looks like you can only redeem miles for air travel, not hotel reservations, but I may be wrong on that. Call the DM service desk to check.

Good luck.