Koni Kai was a wonderful getaway for 4 (my husband, myself, my sister-in-law and her husband). First, when walking into the home, we were met with an open view straight to the deck and the sea beyond. The deck is huge, and the sound of the waves was awesome.
The master suite is lovely. The big bed, gorgeous view, and oh that shower! One thing to note is that sound can carry into the room since the walls don't go all the way to the ceiling. We knew this from the pictures, but forgot and put our lightest sleeper in that room, so during evening hours we needed to be a little more quiet than otherwise. The other bedroom is charming (we loved the little details, like the lifeguard lamps). It has full walls to the ceiling so noise wasn't an issue for that room, fyi. The gourmet kitchen was ideal since we mostly ate in. Breakfast every morning on the deck was great.
We enjoyed going for walks around the block in the evening and looking at the interesting lava rock formations. The beach (Honomolino) that is 20 min walk from Milolii park is a little bit o' paradise, great for swimming and chillaxing (just drive slow or the locals will give the stink eye). And the swimming spot 2 min walk from the house was a great way to cool off.
Rachelle was friendly and quick to respond to my emails.
As others have mentioned, Koni Kai is a bit off the beaten path, but that is its charm. We wanted to feel like we had truly gotten away from it all. Also, the Big Island is BIG, so going anywhere takes time. So for those, like us, who want to feel like they are in their own corner of paradise, I'd highly recommend Koni Kai.