My experiences haven't been as bad as some, it seems.
I was in an eating disorders clinic and the nurses and support workers were friendly which really helped. But, I did find that there were times where my preferences were ignored because it was the "illness" speaking and not me (which was not the case) - though I do understand it is difficult for outsiders to distinguish between the two.
I do agree with Anon #1 where a psychiatrist does seem pretty keen to give you drugs such as anti-depressants as they seem to solve all problems. I do acknowledge, however, that the anti-depressants did help - I had clinical depression and kept doing things I shouldn't have been - although, I have to say, I think it was mainly a placebo effect.
I think that when one is an in-patient, it is important for consultants and staff to talk with patients and spend time listening to their concerns instead of acting like robots with orders.