We rented the one of the cabins, "Onward," here at Brunswick Family Campground. 

Pros:

• Great Potomac river views
• Weather-proof cabin with comfy bunks
• Friendly fellow campers
• C and O Canal towpath cuts right through to allow for some great walks
• Close to Harpers Ferry and tubing
• Close to the Monocacy River (great for kayaking!) 

Cons: 

• The cabin was TINY. Essentially four beds (two bunks) and some space between them to move around. Essentially a shed with bunkbeds in it. 
• Cabin was kind of expensive for what it was
• Older, just-clean-enough bathhouse (quite a walk from our cabin)
• Brunswick train station and depot is just a few hundred feet away and you can hear trains at all times of the night 
• Really bright fluorescent light post outside our cabin 
• Close sites to neighbors