Perhaps a 5* for them is equivalent to a 6x8 jail cell for us. I would imagine they usually get the best service on the planet, not the best service available for average people.
That's exactly what I wanted to say. For us, living in flats or houses and owning up to two cars (and no jets), a cell is probably as much of a restriction on our comfort as a luxury hotel room is for a Saudi prince.
That doesn't mean that they shouldn't go to a proper jail if convicted but I'm sure they already feel punished.