A breed specific rescue might be the better option than a general rescue. They will typically keep their dogs in foster homes, and evaluate them for temperament and health issues.
One thing to address, though, is why he is having accidents inside the house. Does he have a medical condition, like a urinary tract infection, or is he simply not housebroken?
One thing to address, though, is why he is having accidents inside the house. Does he have a medical condition, like a urinary tract infection, or is he simply not housebroken?