We have stayed at the Radisson on Palm Parkway just outside of the West gate near Downtown Disney. The current government rate is $79.00 per night. The pool is really nice and the hotel is not bad either.
You might check some of the other chains to see if they offer government employee discounts, too.
I live in the real world, so I choose to vacation in Fantasy Land!!
WDW-88,96,97,6/99,12/99,4/01,12/01,4/02,12/02...