In 1965 I lived within block of Katrina's Airbnb. While the skyline of Waikiki is unrecognizable the, geography of Waikiki has not changed at all. Where Waikiki begins 0n the west at the Ala Wai Harbor
and on the east at the Honolulu Zoo is only about 3.5 miles and the widest point is about 2 miles. You can walk the beach from Hilton Hawaiian Village to Kapiolani Park by the zoo. That is why I think it is a great place to stay. Another plus is you can catch the number 20 City Bus from the airport and you get off at the first stop in Waikiki, Ala Moana Blvd and Hobron Ln. You can reach almost all of the important sights by public transportation. Further there are hundreds of places to eat within walking distance the apartment.
As for the room it was like a motel room with little kitchenette and it was clean and comfortable.