The psych unit I go to will not allow you to be admitted on that unit if you need any kind of IV or tube feeding. For that matter most physical ailments can't be in an acute state.

I receive excellent care there which includes, Medication management( which could be a med chg or not), group therapy, art therapy, music therapy, each shift you have a contact person you can talk to about anything, Psyc nursing care, a social worker and more. This unit has private rooms, which is great for rest and reflection. Some of the best help comes from the other patients.
Because of the nature of my individual illness, over the last 13 years I have been there multiple times. Some of the most compassionate people I have ever met have been here.
The criteria with my insurance for inpatient treatment is basically a danger to yourself or others. For me it has been either a suicide attempt or suicidal feelings with an actual plan.