In the interest of providing a balanced review - let me start with the positives: the apartment was very clean, it's "small but charming" as they say and cutely decorated - and my wife and I thought the bed was very comfortable. The outside decor is very unique with lots of statues, water fountains, etc. and the property gets lit up at night with green rope lights. The entry way for the units is a nice palm-tree covered circular drive which was picture worthy.
Now the "not-so-goods - but you get what you pay for": your outdoor amenities consists of an open field which also serves as the property's parking lot. The field has a few chairs and a largely unused pavilion there - and you have a partial view of the mountains. So if you're looking for something nicer like a pool, patio or a view of the coast to relax - you won't find that here. The property location is fine from the perspective of being right in the middle of Kapa'a and close to the downtown. The beach is nearby - however you will need to cross over the busy main highway in order to get there if you are walking or biking.
Now the "we had to leave early" issue: while the Airbnb description mentions that chickens are all over Kauai (which they are), what we did not realize is that they would be literally right outside our bedroom/bathroom crowing all night long starting at around 1am. Our bathroom also had an open vent to the outside which meant pretty much no sound protection. We tried ear plugs, ear buds, etc. but it really did not help and as a result we got almost no sleep. We ended up checking out after three nights and rented a hotel room elsewhere. As a comparison, I can tell you that while there were chickens on the other property as well - we barely heard them during the night.
So in the end - you probably get what you pay for in Kapa'a. If you want to save a few bucks and will not be bothered by chickens crowing all night long, you may be fine with this property. However, if you want peace and quiet at night - and a few more amenities - we recommend you look elsewhere.