I am guessing you are talking about the Entertainment Rate. It's half off. So you can get a room for as low as $59.
You need an entertainment card. Then you need to book though the Anahiem Hojo so they can book it at this rate.
It's not available every night. Only on days they have those rooms available.
Just beware when people say they stayed at the Hojo for this great rate it's not likely it was their average nightly rate.
Keep in mind that at that Hojo you can get 15% off by mentioning the DIS.