My significant other and I really enjoyed staying at this Airbnb. I think the photos do a great job at showing exactly what you will be showing up to. The place comfortable fits two people. This place is very clean! It came equipped with some basic cleaning supplies if you need to touch it up during the week, as well as all cooking/kitchen supplies, and soaps/detergents for the bathroom/kitchen. We were also greated with coconut water, local granola and coffee, and some fruit, which was greatly appreciated after a long flight. I will note that the washers and dryers on the complex were newer models than the ones shown in the picture, and will come in handy after muddy hikes or if you use the beach towels a lot like us. Arnold, who lives next door, showed us our apartment and the grounds, and he is extremely friendly and helpful.
As for the location, I think its perfect for a first visit to the island or if you are planning to explore the entire island. Kapa'a is a decent sized town with a Safeway and Long Drugs, but still has a Hawaiian local vibe. This Airbnb is walking distance to the beach (although I wouldn't recommend going their toward the evening because their are some sketchier individuals who hang out), and to some cute shops down the road with some great places to eat and drink. It's about an hour to take the main highway all the way north (as far as you can go), and an hour tops to the south (although I forgot to time it that day so I believe it's less than an hour).