Hey, introm! I agree that people just can't check themselves into a regular mental ward or hospital without approval from a professional. And they need to be seen as a possible danger.
Are you seeing a therapist? If not, then I really recommend them. If so, then you might want to talk to him/her about how you feel. I know what you mean about just wanting to escape for a bit. Hospital stays, though, are definitely not like hotels!
I'm thinking surely there's some sort of program for people who want to just get away--like some spa or something...... The problem might be the cost.