Is it possible to cut off all contact with the dog and said tenant? Can you put your dog up in his crate or in a separate room whenever the tenant is out and about and not in his room? That is definitely not okay.
One of the reasons I never want another golden retriever is because of this exact issue. I lived in the basement with another family upstairs, and every time I took my dog up they would do that exact same thing. Get her to jump up on them, let her on the furniture, distract her when I was trying to call her, etc. No matter how many times I told them to knock it off, they ignored me, and in turn, so did my dog. I started only taking her upstairs when she had a leash on so there was no way for her to ignore me, then I moved out soon after. My dog was not their dog, and they were being extremely disrespectful to me. Unfortunately, my golden does this with anyone, even strangers. Yes, I have done extensive training and it is no longer an issue, but still. Never again. Definitely stop this with your dog.
Forrest - GSD 9/1/2016 - 5/14/2017 RIP
Brooklyn - Golden retriever 1/30/11