Alfon's place is very beautiful. This was my first time in Hawaii, and after seeing the craziness that is Waikiki, I'm so glad to have gone with Alfon's place instead of a touristy hotel. It was a great experience being up in the tropical mountains, surrounded by nature. The basement is very clean and well maintained. The hosts were very accomodating, and were very understanding when we lost a snorkel tube they let us use (sorry about that!). Overall it was a beautiful and memorable trip and I'd highly recommend it.
A couple caveats. The no A/C was a surprise to us, but that's our fault for not checking the AirBnB listing close enough, as it does have it crossed off the list of accomodations. But just be aware if you think this could be an issue for you. The Wi-Fi signal also needs to be better--I was better off trying to use whatever tower signal my phone could barely grasp up there (usually 3G). But this should be easy to fix for them.
Thanks Kai and Alfon! Mahalo!