You are looking for a small container that blends in with its surroundings.. The coordinates will take you to a "regular hiding spot," alas, you probably won't find the container if you look there. Look around a bit more, and you should find the treasure you seek.
Watch for muggles. I had really good luck utilizing a parking spot and pretending I had mechanical trouble... hood up makes for a great shield from prying eyes.
Bring your own pen. Please return the container in the exact orientation as you found it, so the next person to find it will have a bit of a challenge, rather than an easy grab.
Any questions, message me, and I'll respond ASAP.