We have stayed at the Waikiki Banyan before and the location is great! Though not on the beach, it is centrally located and having a parking space is an added plus. The space is in need of some updates, however, and the building is undergoing construction which meant 3 (and one day 2) out of 4 elevators in working order and no working washing machines on our floor or any floors near us. They do not provide pool towels so a washing machine is necessary! I think this is temporary, but you should confirm before you go that the construction is over or at least you know where a nearby laundromat is. You can lug all your laundry to the other tower as we did and then used the dryer on the floor as those are working. There are also no condiments (salt and pepper are usually fairly standard) so make sure you pick those things up if you’re planning to cook. They do have the usual pots and pans and a coffee machine as well as a rice cooker. They had plenty of bath towels and the beds and sheets are comfortable. You will need to bring all your own toiletries (soap, shampoo etc) but they do have some toilet paper and paper towels.