Let me refresh what I said:
You need to have a plastic baseball bat, the soft ones or very light, so that when you tell him to get off the bed or furniture, IN AN EMERGENCY (as in if he rushes you) you can keep him off.
You act like I suggest the bat to beat the dog. Please reread. Beyond that, we'll have to agree to disagree. I suppose you haven't had a dog charge you, but I'd want more than a water bottle between me and a charging dog. And frankly, the water bottle might or might not work ONCE … probably not the 2nd time unless the dog is really bothered by it. Letting this dog continue to bite is dangerous. You act like a basenji is some fru fru 4 pound chihuahua, it isn't. They can do a lot of damage.
Whether the dog charges due to "forward flight" (ie fear biting) or aggression or because it is dominant, my concern is that the owner NOT GET BITTEN AGAIN.
The owner has had a lot of excellent advice. We'll simply not agree but I'd like you to stop acting like my suggestion was to use the bat to abuse the dog.