If using Apple maps go by address not business/hotel/resort name. I used it really quick today to get around a traffic jam by saying my companies name.
Red pin was where it want to take me, purple pin (I dropped for this example) was where I needed to go.
Using the address its spot on but Siri is terrible at understanding names, road names included. So I said the business name and she got it but the POI is WAY off (20+ miles).