Dogs don't bark at me!
I've house sat for 10 dogs before. And they all slept in bed with me! I am generally a very happy and excited person - other dogs feel that and appreciate it! I am always very fit and active- from long runs to long walks, I can accommodate both the old and young pups.
I'm usually also the guy the super barky dog never barks at. I think dogs are sensitive to different types of characters ...