The TLDR version: It was a very satisfying stay. We felt local almost like it was our own home we could feel comfortable coming back to. Will attempt to stay again if we head to the Kona side of the island again.
Caryl was great about giving us tips well in advance. Not just for her place but the local area, places to see, eateries, even daily itineraries in case we needed inspiration. It was not intrusive or overloading either. Enough information to get a feel for what was a splendid stay. Caryl was great about answering questions and speedy feedback in general which was great too.
Regarding the unit, we did not take advantage of the kitchen enough. Maybe next time we will follow the advice better (it was pointed out in the tips) and go shopping for ingredients and make some great dinners. It was a fully capable kitchen, we just missed out on that option. The home was chock full of handy and useful amenities (so many little caring details). TV and internet easy to use. Our devices did not have any access or speed issues.
We liked the location, close to the airport but not too close. Also, easy enough to get to Kona (~15 min based on occasional traffic) but also just jump on the highway and scoot on over to the Hilo side. The Saddle Road (Highway 200) construction is all done so you can ignore any warnings in your tour guide books about that restriction. That's only if you need to rush over to Hilo... if you have time it is much more attractive to just drive North route or more interesting to go the South route [than the middle route].
We liked the pressure from the shower and good heat, not waiting at all. Fluffy towels and comfy bed were great too. The laundry was super easy to use and such a great help (let us pack much lighter). We brought our own detergent but there was some there of course to use.
The paintings and decor in the house were great. Really added to the touch of the place (it's called Artist's Home right?). I understand where the inspiration comes from... just stand on the patio and look out. The view is unblocked to the sea and it makes for some incredible sunsets.
We spent so much time driving on the island, we regret we did not spend more time in the house just relaxing and taking it easy. Maybe next time!