You don't have to let the service determine your location.
To allow the service to determine your location:
Click Current location.
A toolbar opens at the top of the browser window that asks you to confirm the operation. Click Allow.
Your location is indicated with a placemark.
Click the placemark to see your exact address and point coordinates. Clicknext to the address to set a route to your location.
For more information about how the user's location is detected, see Detecting the user's location.