After a psychosis years ago, I was in a psychiatric ward / care. I mean we got two of those kinds in my country, "open" ones and "closed" ones. The closed one, you cant even shave alone, there are guards, it's strict and incredibly boring, cant go outside, gotta go asleep at 10, no phones allowed (at least those that have a camera and modern ones all do) and has a "heavy" atmosphere. Felt even absurd at the times. There was a TV room there, smoking room and some books. Not much to do really. I was here fortunately only for couple of weeks
The "open" one is different, it costs some amount a month, sometimes the country / city pays for it, you can even go outside, you can take your laptop, phone etc. with you, there were activities, everyone had some chores etc. Had a roommate here as well in the open one. I was here for 5 months
Now, the experience itself varied. The closed one, the proper one in question I guess, was mind numbingly boring and hard to be as I had constant anxiety, those were some of the worst days in my life anyway. I didn't have a roommate for the first week but had for the second week. He was alright but seemed to be a pathological liar of some sort, had some crazy things to say all the time, ridiculous stories (although who knows, maybe some of them were true), some claims that just were completely wrong etc. It was strange.
I saw a girl there who's hands were constantly shaking. It was pretty sad to see at the cafeteria that her arms were full of scars, but they were all doing little zig zag as her hands were so unstable. She was a sad sight to see. There was another girl who seemingly seemed to be a friend of this one, she was quite social but troubled, sometimes she just started screaming at nights and usually the guard took her away for a while. I honestly got bit startled the first time she started screaming at the night as I had fallen asleep and I was very dizzy from the sleeping medication and suddenly I just heard screeching.
Like I said, it was very, very boring there and the atmosphere was pretty hopeless at the times.
The open one though was different, mostly fine, had some decent people / staff and had even movie nights couple of times a month or so. But truth to be told, I am not sure if this really counts as a psychiatric ward / hospital, I guess the first one was the one you were talking about