"I swear to God, they [the jailers] are nicer than our parents," said Othman al-Amri, once No 21 on the kingdom's list of most-wanted terror suspects.
The programme, broadcast on Saudi television late on Monday, included brief footage from inside the jail, showing clean facilities and beds lined next to one another.
It signalled a new effort by the authorities to encourage militants to give themselves up and to allay suspicions that they would be ill treated if they did so. But persuading them to opt for al-Haer may prove difficult.
In September at least 67 prisoners died and 20 others were injured, along with three guards, when fire swept through part of the jail.
I think they might not be so easily convinced.