Change "locations" slug?

I was having a similar issue and thankfully the answer is yes ^_^

You can add a filter in your functions.php file that will change the slug

function custom_map_rewrite($args) {
	$args['rewrite']['slug'] = 'projects';
	return $args;
}

add_filter( 'stlr_place-post_type_args', 'custom_map_rewrite' );