Wow Nuc! This just gets worse and worse hey. Getting yourself and your cat and valuables out of there sounds like a good idea. Hope you get some good advice from the tenant council. Any chance you have a male friend or relative who would move in while you move out for the 3 weeks the squatter is there? Leaving him alone might be more trouble. He could turn it into a crack house while you are gone.

This just isn't right. I hope you find away around this soon. Can't be good for your health. There has to be a way for that to be a consideration.