I do not believe that he is allowed access to anyone on the outside (for that matter he barely sees anyone on the inside), no papers, tv, phonecalls. Nothing.
Doesn't matter what you believe. The facts are that they do have TV's in their cells. They can write and receive letters. In time, they can receive visitors -- lawyers, for example. They have a constitutional right to see their lawyers. They get their Koran, their religious services, food that meets their cultural needs, etc.
It would be a tough life for someone with a gregarious personality. However, for someone who doesn't mind solitude, it's not a bad life. You have no responsibilities. No bills. No taxes. All your basic needs are provided. For people willing to live in mountain caves, it's probably something close to luxury.