I was in 4x last summer. I guess the best I have to say too is that it did keep me safe .... but yes, I did feel sort of like I was in prison of a sort, too - on a locked floor and could not go out, no phones/computers, limited visiting and phone times. It was not horrible by any means, but it really did me no good in the sense that I was better and more stable/healthy/capable/prepared to re-enter the world after a week or so stay. It was not a healing place. It really didn't address my issues - generic groups and such, which were sometimes boring because they had nothing to do with me, but I had to go to have privileges. A lot of people were there for med re-adjustment or waiting for admittance into alcohol rehab programs .... where I was was better suited for those groups of people's needs ... but I needed something different that I couldn't get anywhere around here.
I'd say though that if you are in danger of not being able to keep safe, then go .... if you need a safe place for med re-adjustments, then go.