When I have problem with my neighbor, I walk on over and ring the doorbell. I can then voice my concerns directly. This gives us a chance to address the issues face-to-face. If it doesn't work out you can always contact the regulatory agency in charge, the OLCC. They are quite capable of modifying the situation. What your neighbor is doing is legal, taxed, and tightly controlled. However, their lifestyle and living conditions are their business.