This campsite is located very conveniently between Sharpsburg/Antietam battlefield and Shepherdstown W. VA. It is bordered by the creek on one side and remnants of the C&O canal on the other. If approaching by Road, the only access is via a footbridge that crosses the canal from the road near campsite 8, which also happens to be near the latrines. Accordingly, I would recommend a campsite in the middle of the cluster to avoid carrying your gear very far. (This is not so much an issue for bikepackers as the towpath/bike trail runs the length of the campsite on the campsite side of the canal).
In early June, there are bullfrogs in the canal, but traffic along the road was light. You also heard occasional trains about a mile away. I did not find any water access, so you must bring your own.
At Sharpsburg, the Bloody Lane trail is quite good and interesting for kids as it passes a cow field and through wheat fields at the right time of year. The tower makes a beautiful scene. Shepardstown is quaint, with a few good places to eat and a Food Lion to stock on things you forgot. Sharpsburg has a great ice cream parlor--the medium cup gives you about a pint for $2.65 (2021 prices).