This cache is on a byway that is quiet and peaceful. But there are sometimes muggles.
You can park at JJT's Round And Round The Garden cache and walk along the lane to GZ. Or you can drive about 20 metres past GZ and stop on the corner, where there is room to turn.
This cache is a disguised nano that is you'll need to retrieve and replace carefully. You need a pin to take the log out and a pen to sign.