I was sent to one for a little over a week. When I was sent, it was right after my first attempt so I was in a dissociative state at first. The extreme change in my environment made me feel like my mind was pliable, like I had access to change parts of my life that seemed so permanent before. Suddenly I had no access to the outside world, I was surrounded by nurses and mental health technicians who knew exactly why I was in there, all the other patients knew, my parents knew, I felt like an open book, but I liked it. I felt vulnerable in the way you do when you fully trust somebody, I felt so safe and cared for by the people around me that I felt like it was okay that my life was so open to them. All my worries about how I wasn't using my time wisely or that I was doing something wrong were gone, I no longer had to make those decisions. All the hassle of planning my day just to feel like I didn't do anything right were gone because someone else planned my day for me. They're making sure I don't oversleep or undersleep, that im eating enough, that I always take my meds. I don't need to hide my feelings from anyone, there's always someone nearby dedicated to helping me. It felt incredible, like how I imagine being a pampered dog feels, you don't get to do all the things you used to be able to do but in a way that's freeing because all that choice fatigue is gone. It's a really surreal experience to have your day planned out hour by hour and be surrounded by strangers in a new and small place, but for me it was a very positive one.
Keep in mind I was there against my will and after an attempt where the police got involved, so the facility I placed in didn't give much freedom. From what I've heard, the more freedom the patients have the worse the experience is since you're being forced to be vulnerable without the supportive of properly trained staff. Where I was, you weren't even allowed in the same room as another patient without supervision, and the most physical contact you were allowed to make was a consensual high-five, even if both parties wanted to hug each other they would not be allowed. You could speak to each other quietly, but that was the most you could do.