First of all, I had a bad feeling about this stay prior to arrival as the owner was almost always late in replying to my messages - he apologized every time for replying late, but I would have liked him to just respond sooner instead as my messages contained important logistic matters that I wanted to take care of sooner than later.
The owner apparently runs different businesses, so Airbnb is probably his side gig, but that does not justify his super slow response. Job is a job, you gotta be responsible and do the job properly.

Regarding our stay - probably the only thing we liked about it was the location.
The check-in was not difficult but had to get one of the keys reactivated as it was demagnetized and no longer working.
Having have to do this after a hectic day brought additional stress which we did not appreciate.
The owner should consider changing the room keys to a keypad one just like the other rooms on his floor so that his guests do not have to worry about this.
The room was very hot, and we had to spend at least a few nights before we were somewhat comfortable with the air from the fan - that we had to go out and buy.
The owner reimbursed the cost, however, we feel that it was not our responsibility to take care of this issue ourselves, and the owner should have made sure that the guests have access to the bare minimum things like comfortable room temperature.
It took out a big chunk of our limited time to go buy a fan and assemble it, which was and is still unsettling.
What if we didn’t have a rental car and/or I was all alone with no means to take care of the issue?
It does not make sense that no one mentioned in their reviews about the AC not being powerful enough to cool down the entire room.
Perhaps they told the owner directly (since he did ask me to do so as well) but was told not to share the bad feedback publicly.
I am writing this publicly so others will be aware of this.
In addition to the AC issue, many of the amenities were defective or old - we also had to buy a hair dryer since the one they had was of a very poor quality and broke down while I was using it.
Toilet paper holder was already broken, my boyfriend spent some time fixing it.
The couch is a poor quality one, definitely not the one in the pictures. It was a worn-out stained floor one that just sat on the floor.
The main room-darkening shade was broken, and you cannot open or close it properly.
Keurig was dirty - I don't think it's regularly cleaned.
There were only a few toilet papers in the room, which was not enough for 2 of us staying for 9 days.
Just to let you know, there are no pineapple cups or free water provided, if those matter to you.
The pool at the hotel is not a nice one so don't come with high expectations.
This was my first-time visiting Hawaii and was also my birthday trip - very disappointed and there is no way that we would ever book this room again or use any of other business that this owner run.
上記英語で書きましたが、良い点はロケーションぐらいでした。
もう絶対この部屋の予約、このオーナーの経営しているビジネスを利用することは絶対ないです。
日本人オーナーだから絶対日本で受けるサービス並みのサービスを提供してもらえるだろう！とは思わない方がいいです。
『部屋が暑いなら自分で扇風機買ってください。』って…は⁉ゲストに普通それさせます??