So, first off, this place is not in Keaau and will be a somewhat longer drive to places like Hawaii Volcanoes National Park for example. It's still a good location overall, but is definitely a ways out in the country of Orchidland Estates vicinity.
Unfortunately for us, this was the least pleasant Airbnb stay I've ever had. Upon arrival we found that the water had gone out to our unit, so there was no usable toilet. Sarah did promptly get a plumber to deal with the lack of a usable toilet, notify me, set us up in a different unit and for that I was thankful. The lack of notice that we would then be disturbed at 8 in the morning to shoe us out of the replacement unit for hair-cutting that apparently had to happen in the same unit we were in was additionally disappointing. The lack of potable water, was not in itself so bad, and thank you for providing what you could, but the lack of any prior notice to this effect is misleading and unprofessional. Similarly, I would be inclined to be more understanding of the potential for certain unreliable sanitation or other issues, but the lack of mention that the unit is off-grid in the ad is similarly misleading to your guests and consequently to me less forgivable. Add to this, that the toilet then leaked all over the bathroom floor for our entire stay in the supposedly "newly renovated" cottage and it was felling less adorable by the minute. Further, the shower for the unit we actually rented, the Dharmadhatu cottage, was either burning hot or totally cold with no in between, with no light and the thin shower curtain essentially dividing the person attempting to bath from the driveway and the, in my case, conversation, car headlights and celebrations of whatever going on just on the other side at Sarah's property all the while I'm a naked silhouette from my own headlamp whilst intermittently cold or being burnt. On top of this, the unit has no window curtains for any privacy and the shut-off for the electric kettle is not functional and nearly began to burn the cord had I not noticed and shut it off manually. While Sarah is perfectly nice, the unit is simply not yet fit for rental as is, or somehow we were exceptionally unlucky in timing there and everything broke simultaneously. Even at the cheapest and worst of accommodations, having to worry about a flushing toilet, potable water and defective appliances is not something one has to deal with and grounds for a refund. People that rent such units are looking for a getaway, not to have to deal with such deficiencies in accommodations.
As for positive things to note, I attest the bed is surprisingly comfortable.