Jojakoji is one of my favorite places in Arashiyama. It is a fairly large temple that is built up into a mountain and is just brilliant during the fall. Seriously, this temple has some of the best autumn foliage in Japan. So of course, the best time to go is during the autumn season but anytime of the year is worth checking out Jojakoji. Jojakoji is about a 15 minute walk from JR Saga Arashiyama Station or Keifuku Arashiyama Station and about a 5 minute walk from the bamboo groves.
From around Keifuku Arashiyama or the Togetsukyo Bridge you can take a rickshaw ride that will take you through the bamboo groves and ends at Jojakoji. For a map of where it is located check out the Japan-Guide.