I've spoken to a few close friends who've been in jail. It's all the same story. The fact that they can't leave is the major trauma. I don't think it really matters how badly they're treated inside the prison. None of it can compare with the un-freedom inmates feel of being locked up. That feeling that freedom ends at the green door. Which is the colour of the exit door in Swedish prisons. Anybody saying that we treat prisoners too good and that it's a resort lack serious empathy skills. I'm willing to bet that nobody thinks life inside jail is better than outside no matter of how comfortable it is. There's plenty of stories of inmates escaping just to have a few days extra freedom.
Even if they'd have jacuzzis' and free massages each evening, I still don't think anybody would think it's worth it.
...if they ever had it.