This was overall a really good experience, with just a few small things that collectively keep it at 4 rather than 5 stars (note that these are more about the property than the host; we had no real issues with Brian per se):
-There's some confusion over check-in times. The airbnb listing says that check-in is at 4:00, but the hotel website and the host's email said 3:00. We decided to split the difference and arrive at 3:30, and the room was still being cleaned. It might help to check in about this before showing up at the place.
-The air conditioner drains directly onto the lanai and then drips out of a central outlet there--this seems to be a collective design decision on the part of the hotel (it's an old hotel), but don't be surprised if you head out to the balcony for breakfast and immediately step in a puddle.
-We couldn't find any condo orientation documents or explanations of how things are done at the hotel--thus, there was a bit of a learning curve for some things. The grills on the recreation deck (which is a nice spot!) for instance, aren't free--you need $2 in quarters (we were directed to a broken change machine by the person at the minimart, and finally waited for quite a long time at the front desk)... but that's not all. You *also* need to reserve them at the security desk downstairs, whereupon you get a key that enables you to unlock the change slot, which you have to re-lock and remember to return the key afterward. And the grills themselves are... not good; they're slow-heating electric coil grills, not propane or charcoal, not good at all for applying direct heat (i.e. grilling) and not all that different from just cooking in an oven. Remember to be done within an hour or they shut off and you have to round up eight more quarters.
Overall, it's a very good spot, conveniently located to the beach, the zoo, Diamond Head, and some other cool Honolulu stuff, and the free parking is hard to beat. But there are some other aspects that are maybe less convenient.