There is a lot of talks that the accommodation in Hawaii is getting more and more expensive this year. This tendency is generally true, at least from my experience searching the websites like expedia, cheapostay, hotels.com and others. It is harder and harder to find hotels in Hawaii for less than $100 per night.
However, it is still important to look for possible coupons and promotions, as that is what will eventually save you a lot of your stay.
Here is great deal on Waikiki Getaway Hotel! You can get up to 40% off your booking with them by using the following promo code: KAIMUKI