Imagine a door. Anyone who walks through the door gets the deepest desires of his heart fulfilled to their maximum extent. His actual desires—not the desires he thinks he has or wishes he has. Imagine the effect walking through that door would have on you and the world if you and everyone else endured eternally. Would the result be Heaven or Hell?
Discussion
I just don't agree with the concept of "true desires that are distinct from the ones you think you want". A desire is by definition what you think you want.
If someone/something is deciding your desires for you, they are not your desires anymore.
To answer your question: not heaven, not hell. But it sounds a lot like living under an authoritarian regime that knows what's best for you.