Great location, close to shops and restaurants. Not many bars in the immediate area which suited us as a family, seemed safe without partying noise.
Sirens from cops and ambos pretty frequent, but general traffic and people noise not really a problem. (If you're a light sleeper, not sure if anywhere in Waikiki wouldn't be noisy for sirens.)
The main apartment has a well stocked kitchen but would be tight for space/prep work if doing heaps of cooking. Not a problem if eating out by choice on holidays.
The two separate apartments were ideal for us with a teenage son, giving enough privacy for each room. Great value for money compared to getting two separate hotel/resort rooms.
Cheryl was a great host, promptly fixing a very minor problem in the bathroom.