GreeneStone Centre for Recovery is a private, residential addiction treatment centre in beautiful, serene Muskoka, ON. With an established track record as the best opioid and inpatient addiction clinic in Ontario, residents come to us from across Canada.If you or a loved one needs alcohol rehab or requires help with overcoming drug dependency like cannabis, cocaine, heroin, methamphetamine or crystal meth, our team is waiting for you to make the first step and ask for help.