Stealth is your friend. GZ is on the main road and is facing a block of flats. It's also close to a path popular with dog walkers. Fortunately, you do not have to hang around looking shifty, there's a handy bench to pretend you're doing something else.
Please replace cache exactly as found.
GPS signal can take a bit of time to settle, but it does eventually. Although the rating is 1.5, the terrain is flat and suitable for wheelchairs. Wheelchair users might need some help retrieving/replacing cache.