i'm really really sorry, but I deleted the email i received from them (i'm on virtually all of their emails, just in case a good rate does pop up). But I can say I only got it a couple of days ago. Perhaps they might have the rate on HRWW, tell them you got the hilton email with the price on it. Did it come up online? it's only available for stays till the 15 Mar I believe.
Also, re the gym, is the gym - hotel owned? isn't it a policy if the gym is owned/run by the hotel they let you in for free as a silver, gold, diamond? I've found differences re this - in malaysia/sin their gyms are run by Clark Fitness (which i'm guessing is a seperate company), but they don't charge for access.