Aston Waikiki Banyan has 1 bedroom and 1 sofa bed with kitchen condos, a pool and cheapest daily/weekly parking rate in Waikiki, can't recall if it has a gym.
Our favorite hotel in Waikiki now is Laylow, right in the heart of Waikiki, heated pool, has a gym and as soon you step out there's Marugame Udon, International Market Place, ABC store, Kona Coffee.
Never wished for a kitchen whenever we are in Oahu.