Harding park is a nice cute park that was built quite recently. It definitely is worth going for a detour for a break if you are coming from the Iron Horse Trail. There is also some parking for people coming by car.
Please be careful not to get cut as you are looking for the cache. Please also be stealthy and not disturb anyone, especially since the park is right next to a residential area. Make sure to replace exactly as found.
Please do not cross the street to the apartment buildings, the cache is not there.
Good luck!