If you're at or within 100 feet/30 meters of a destination, consider navigation complete and stop routing. Many times Waze will remain active, showing I am 100 feet or less from a destination, and will frantically re-route (or at least attempt to). In my experience from Waze, this is most common in shopping centers or business campuses/parks, though it happens sometimes at single building destinations, such as a standalone restaurant or even at my home. Waze shouldn't feel a need to provide door-to-door directions.