This is a very scenic spot. The condo is maybe ten paces from the water, so you get to hear the wonderful surf constantly. It's also situated so that it doesn't face due east, which is great, as you get a nice angled view of the sunrise without it beaming directly into the condo. Very stylish and comfortable, and the check-in process was super simple, as we were simply given a code to go in.
Be sure to check out their house manual, as they offer many suggestions on what to do. Kapaa is centrally located, so you can go north or south just as easily. One word of caution (as attested to by the owners), there is such a thing as rush hour traffic on Kauai, especially near Kapaa. This has less to do with the number of cars and more to do with a two-lane road closing down to one lane right at the condo. So if you can avoid driving to or from the condo around rush hour you'll be fine.
Kauai isn't called the Garden Isle for no reason. It's incredibly lush and offers an (often misty) view of the mountains from virtually everywhere on the island. It is a very relaxing place, and the people are just wonderful.