Stayed for about a week and had fairly little to complain about afterwards. The place offers a great view of Waikiki beach (a little bit blocked by a couple buildings but you get all of the sky) as well as a good view of Diamondhead from the kitchen. The room was comfortable to stay in, had all of the extra amenities you'd expect, and was in a great location. A short walk down the street was the beaches, walking westward took you right into the International Market Place, and there was an ABC store just down the street at the corner.
The only thing to be aware of is that as with most of the older buildings in the area, bugs are going to be a common sight. I'd maybe seen one or two roaches in the kitchen (around the sink, beside the stove) over the week there. However, being that it is a tropical environment outside it wasn't a complete surprise. The host does a good job at treating the units as one or two small roaches can be dealt with quickly on our own.
Otherwise, I have no complaints and only good things to say about this place. Would definitely stay again when I come back to visit Honolulu!