Motuihe Island is a scenic spot listed under Mount Wellington, Auckland City, with a Google rating of 4.8. Motuihe Island is an island in the Hauraki Gulf and not an inland suburb, so the listed suburb is likely just a directory reference.
A good scenic spot rewards a little planning. For an island in the Gulf, you need a boat or ferry to get there, so check sailing times, weather and the last return, since changing seas can alter plans. Take everything you need, including water, food, sun protection, a rain jacket and sturdy shoes, because facilities on islands can be limited. Many Hauraki Gulf islands are protected for native wildlife, so check your bags and gear for pests before you travel, and take your rubbish home. Regulars go on a calm, fine day, tell someone their plans and allow time for a slow walk and for the views.
For visitors to Auckland, Motuihe Island is a scenic day trip in the Gulf, and it is worth checking boat times and local rules before you go.