Nice large space with well-stocked kitchen and lots of closet and drawer space to allow for unpacking. Much bigger than hotel rooms, which was nice as we had several rainy days while there, and really a great value for the amount of space. There was a large comfortable bed, a seating area with ottomans, floor space for stretching after hikes, and a dining area. Sadly, we didn't get to enjoy the deck due to rain. The location is great - as others have mentioned, lots of amenities super close and a short drive in either direction to Kilauea or Hanalei.
The space is private, although you may hear footsteps or voices downstairs, but it was generally very quiet at night (maybe a rooster which is a given for Kauai). There was one night after 10pm that we heard someone's phone conversation outside, and the windows were surprising as they don't fully shut (which is probably fine generally in the tropical environment). Luckily, the conversation ended shortly after that. You will have to go up a flight of stairs to get to the space, not sure if I saw that mentioned in the description, but it was not a problem for us. It just surprised me as I had assumed the unit was in the backyard, not above the main living space. Again, not a big deal, but I know i always like reading these details in airbnb reviews!
The only suggestion I have would be to include a map with some highlights of local favorite hikes, beaches, etc. I have no doubt Conrad would have provided these verbally or by messaging, but this could be useful info to have in the room.