It can be more accurate - although modern browsers require you to grant location access permission.

Pasting this into the javascript console of a browser (just tested in Chrome and Safari):

navigator.geolocation.getCurrentPosition(function(pos){console.log(pos)})

Then feeding the latitude and longitude into Streetview it gives me (after granting location permission) the front door of the building next door.

Note that if you can come up with a convincing explanation for why an unsuspecting user should click the location request popup, this'll defeat the VPN as a means of hiding your location... "Click here and allow location access to see hot girls ready to meet in your area!"