I recommend that you go to the town hall and ask if the home is zoned multifamily. If you don't have smoke/carbon alarm and don't wish to move, invest in one from a hardware store. At least this will help you not worry about fire/carbon monoxide. Protect yourself if the landlord does not.
Also get a hold of Tenant/Landlord book. Consult Fair Housing. Good luck. This is my opinion, always consult a lawyer for legal advise.
55 Beach St
Westerly, RI 02891