We enjoyed our stay at Hale Ono Loa unit 301. By and large, the unit was great: the lanai was a welcome space to relax at the end of the day and the unit had a good kitchen setup for the meals we wanted to prepare ourselves. The bed was comfy, and there were lots of fans to help keep the air circulating. The pool was great, and the deck area overlooking the water was a great place to wrap up the day.
A few areas for improvement include the condition of the unit: it is fairly dated and it's rear, corner location isn't ideal. To stay cool, you really need to keep the various windows/vents open because there is no AC. Unfortunately, the unit is near the main stairs/elevator entry for the level, as well as the trash chute, the and laundry room. It is also above the main recycling area. This means you'll hear people as they come and go right past the bedroom windows, as well as when people dump their cans and bottles. Additionally, the condo community to the north (right "behind " the bedroom windows) has decided to set up an outdoor smoking area just behind the fence separating the properties. This means you'll get the occasional waft of smoke and will be privvy to all of the early morning and late evening conversations of the smokers. Or, you can shut the vents and deal with the heat. We chose to deal with the noise/occasional smoke because the cross draft was essential to staying cool.
A few notes: bring shampoo and conditioner. Soap is provided. Bring coffee: there is a "regular" sized coffee maker. The hosts leave a great welcoming bag for you, too!