The nearest grocery store to Nawiliwili Street is a Safeway, about one mile. It's quite a large open plaza style shopping center with many other shops, eateries and services. Costco is even closer, in another shopping plaza with eateries and shops.
I hope this helps! I'm happy to send other community info on Hawaii Kai if that your favorite area. It's one of neighborhood specialties.
My business partner represented the Buyer on the Nawiliwili home. I'm sorry you missed it but let's find you another similar one!