Adderstone Reserve is a council-managed park on Aokautere Drive in Fitzherbert, on the eastern side of Palmerston North, carrying a 3.0 rating from just two Google reviews; the council's parks pages are the place to check for current details.
Reserves like this are the quiet workhorses of a suburb: open grass and a bench or two rather than attractions, space for kids to run and dogs to walk under whatever lead rules the council sets. Expect the simple version of a park — often no toilets, so bring what you need — and mind the Manawatū wind, which can turn a still morning gusty by mid-afternoon. Regulars choose small neighbourhood reserves for exactly that calm, and check the council website for mowing rounds, planting work or track closures.
For the houses around Aokautere Drive, Adderstone Reserve is the local patch of green, close enough to become part of the daily routine.