My wife and I stayed here for our honeymoon and it was the best decision we made for the trip. The space was private and very relaxing. You have a whole shack to yourself away from everyone else. We found out later that the resort is on its own water and electricity system, which was very impressive since everything functioned great! Although, that does mean you have to be more conscious of how much water you are using and make sure you turn off the lights etc. Like other reviews said, there are little geckos around that make this laughing sound every once in a while but they are harmless and leave you alone. The shower is outdoors, which worried us at first but it ended up being a very nice experience. The shack has it's own boiler system so you never run out of hot water when showering. We did find a frog in the shower once which was a funny surprise, but we just shooed him away and he left. With this place you have to be ok with being in nature since that is the point of this place! For my wife and I who had been tired of planning a wedding and being in a city, this was a very nice place for us to unwind and relax.
The property is also great for exploring and being close to nature. There is a short hike to the top of the waterfall where you can swim if it's not too murky, and some slightly more advanced hikes to the ocean and the bottom of the waterfall. If you are there, I highly highly recommend you hike down to the bottom. It is a bit steep, but there are ropes to help you and it's not too long. But once you get down there it is beautiful, if the water isn't too rough you can swim in the ocean, or you can swim in some pools created by the waterfall which really feels like paradise. I cannot stress enough how worth it this was, for my wife and I this was the highlight of the trip. When you drive the road to Hana most people say to stop and see the waterfalls, but nothing compares to the spot at this retreat. Mostly because of how private and untouched it is since it's only really accesible if you live there or are staying with them, so take advantage of that!
Lastly, if you are staying here I highly recommend the private chefs Andrea & Gabriel (Ask Kutira for their number). We went out to eat at many places throughout the island but nothing compared to their food. They use all local ingredients most harvested from the property itself and it all tastes extremely fresh and delicious. We ended up getting a mix of togo meals and cooked in 3 course meals which covered us for our entire stay combined with us also going out to eat. They were also so friendly and helpful as they pointed out a lot of things to do on the island. So if you stay here I recommend doing at lease one meal with them since it the best we found and it's food you cannot find anywhere else on the island.