The more precise way to find it is to use What3words https://w3w.co/slippers.noses.polishing
From Dumfries follow the signs to “Solway Coast” travel through New Abbey and after passing through the village of Kirkbean turn left following the signs to Southerness. As you come into the village pass the shops on your left and turn left into Sandy Lane. Follow the lane until you come to the junction of West Sandy Lane and Sandy Lane and turn RIGHT – a little track that even Google doesn’t know about -and Lennox is on your left hand side, the last house before the beach.