I often spied this little road passing by below on the PIE. It always looked so interesting and enticing, but somehow I never got around to exploring it until sometime next week. I would highly recommend taking a bit of time to explore the surrounding Goldhill Estate, and it's lovely black and white colonial bungalows. It feels like a place out of time. A good place to start is Malcolm Park along Stevens Road.
Cache should be quite an easy find. Only reason I would not consider it wheelchair accessible is the location might be a bit of a squeeze for a wheelchair.