General location puts your listing....somewhere and every time on a different place. In my case-at least 500m away from the real location. If it's a rural area...it doesn't matter. In a city, where people are searching for a place, close to something specific-public transport, another ABB, gallery, restaurant, etc., the exact location can make a big difference.
Another problem with GL: if there is another host nearby, with 50 listings (50 apartments in one building), the map becomes completely flooded.