What's more important?

The right to be free or the right to be fed. The right not to be sectioned or the right to have a home.

Homelessness exists across europe even though there's a human rights act to guarantee liberty to everyone but vagrants, the mad...well generally its just the mad (as in anything in dsm or whatever else lawyers think is acceptable to allow to happen to another human being).

But is the guarantee of maslov's basic hierachy of needs a human right?

Yes. If not then it should be. Never to be taken from a person.