The stairway connects pedestrian traffic between Sycamore Ave. and Valley Run Drive.
There is NO public parking on Valley Run Drive.
The camo'd cache is only large enough for very small trading items.
If you use no additional hints: 
= Evil Hide
Hint #1: 
= The Container - If you use this hint the difficulty is lowered to 2½ stars. 
Hint #2: 
= Helpful - If you use this hint the difficulty is lowered to 2 stars. 
Hint #3: 
= Spoiler - If you use this hint the difficulty is lowered to 1½ stars. 