The Sheraton Anaheim has their version of the "Heavenly Bed"--I think it is called the "Sheraton sleeper". The beds are great...however, the Sheraton Anaheim isn't the greatest IMHO. We stayed here in July and the hotel had some major issues. I believe it is still going through some renovations. I wouldn't recommend it. It isn't close to the convention center either... The Coast Hotel was supposed to be converted to a Sheraton and it's closer to the convention center than the Anaheim Sheraton--you might want to check to see if they have the Sheraton sleeper beds there.
I think that the Marriott hotel may have their version of the Heavenly bed--I recently saw an advertisement about their new beds. I would call and ask them (it's also right next to the convention center).
I agree about the Candy Cane Inn--those beds were very comfy! The Candy Cane Inn is pretty close to the Convention Center as well.