This building has two semidetached houses, each with a different street number. House number 6 is on the street side of the building and it shows in the map. House number 4 is on the garden side of the same building, behind house number 6. This map is missing the reference to house number 4 in Berger Weg. Please add it. You can check as a reference Google Maps, Apple, Tom Tom and many others that show where Berger Weg 4 is and that it is missing here.