The cache container is a magnetic nano, and is located in a small park in Redange-sur-Attert.
It should be no problem for you to find the cache in a discrete manner as you are simply going for a walk in the park. Anyway be carefull as there might be some muggles observing you, as the park is surrounded by houses and is just situated next to the route de Reichlange, a main street of Redange-sur-Attert. Best is to park your car at the given coordinates of the Parking Place de l'Eglise (One Way Street) and walk to the hidden park of Redange-sur-Attert. It's about a five minutes walk (+-420 metres as the crow flies). I was just wondering if this small park is ever used by someone, well in any case it's a good place for a cache. Enjoy your walk in the park!