Tell him staying in a hotel isn’t gonna work one bit. If I was you I’d tell him hotels are banned or it’s over. If he wants to beat his addiction it needs to be at home with the support of his family.
I don’t know you bit you come across as too nice and leniant. It’s not a bad thing. But he has responsibilitys and a son. He can’t go hiding in hotels. I’m not perfect and I’ve done some bad stuff. But you don’t deserve to be treated like this. Try and get a good sleep tonight.