Hi I don't even know,
Thanks for reaching out. It's good to hear that you have a plan in action and are seeking some discussion on experiences. Sounds like you're on the right path!
I can only speak from my own experience as an 'in-patient' in a mental health clinic/unit. Mine was about 12 years ago but from my memory, it was actually really helpful, supportive and well ran. Mine was through the private system so i'm unsure of the differences between private-vs-public.
But the staff were amazing, with counsellors, psychologists running groups, 24/7 nurses in the facility to offer support and care. Appointments with a GP and your regular appointments with a psychiatrist to track your progress and medication. Interactions with other patients and plenty of food and rest!
They were really invested with my support and including my family etc.
Visitors were welcome and their were times where i could leave the clinic with family and come back, but this was all very strict and needed to be approved.
From my experience, i think it was very helpful! But that doesn't mean that everyone has the same experiences or thoughts around it.
Either way, this is about you. So just give it your best, listen to the support you're getting and advice by your treating/medical practitioners. At the end of the day, it'll be an experience and some extra knowledge, at the very least.
Wishing you all the best and sending you strength! :-)