This is not really Boat House Hill. It is Lemon Hill hosting one of the historic Fairmount Park Mansions. However the area overlooks Boat House Row with a nice view of the Schuylkill River and Philadelphia. There are picnic areas and walking trails. One can park near the cache.
To avoid the bushwacking, find the view (see the title), walk down a bit, find the trail, find the cache.