WP Residence provides two types of maps. You can choose between Open Street Map and Google Map.
Open Street Map
For open street map option you don’t need api. For tiles server (map images) but you can use MapBox API optionally.
If don’t add API for MapBox we will use the default open street server tiles.
You can get it from here: https://www.mapbox.com/
IMPORTANT: Street view and places options from property page map are not supported by Open street map.
How to change Open Street Language
In order to see the map, you must add your key in here.
Check this help to understand the steps for getting your key – http://help.wpresidence.net/article/google-api-key/