First of all, I don't know what the cost was per night as we used our points for this place.
This was the first place on the island we stayed (one-bedroom Pahio Resort). The place we stayed in was decent from the inside, although somewhat old-school in design. It looked like decor my grandma might decorate with if she lived on Hawaii. Nevertheless, it was nice inside.
The entryway to the actual room, however, looked like an old YMCA building (quoted from my wife), with painted-white bricks leading up the stairway. It does make it seem somewhat old and prison-ish.
The upside is that the resort shares their property with the Radison Hotel, which in our minds was the best place we stayed during our jaunt in Kauai. Read more about that night's stay in our journal for the Radison.
Pahio's pool was small and uninviting. However, you are welcome to use the Radison's pool and spa which is much more fun.
Overall, if you're going to stay on the property, stay in the Radison Hotel rather than the resort/condo area outside. It's well worth whatever the difference is in price.