To stretch even further, they are even better than some dormitory rooms I've seen across the world. Check the picture at the top of this article that shows the maximum security prison's cell in Sweden: http://www.theguardian.com/society/2013/dec/01/why-sweden-cl...

Taking it to the absurd level, A. Breivik, a Norwegian killer of 77 people (mostly children), demanding better video games "to end his torture": http://www.euronews.com/2014/02/14/far-right-terrorist-breiv... and here's how his prison looks like: http://content.time.com/time/photogallery/0,29307,1989083_21...

I guess that only proves a point that crime prevention is not about the severity of the punishment, but the well being and education.