We enjoyed our stay here. The apartment is spacious and was perfect for our family of 3 (we had our toddler sleep in the bedroom and us in the main room). We appreciated the various amenities for kids (travel cot, booster seat, and beach toys), as well as the parking (a rare amenity, especially in Waikiki) and the rooftop pool. There were a couple of things missing from the apartment but we let the host know at the start of our stay and they kindly went to Target to purchase the items straight away, which was very appreciated. Overall, we were pleased with our stay and would consider the apartment again. However, I do want to flag a couple of drawbacks, some of which others have also mentioned:
1) The apartment is incredibly noisy at night. I read others' reviews and was expecting some noise, but it was honestly much worse than what I expected. Waikiki is a particularly noisy neighborhood at night, but it is worsened by the total lack of soundproofing in the building, so you can expect to be woken up every night by various noises outside the apartment building.
2) The water temperature in the shower fluctuates significantly.
3) The host is not flexible on check-out time, so do not expect to be able to check out any later than noon, even if no one is checking in the day you check out.