We stayed there most recently this fall - 3rd floor water view. It's our favorite club level (concierge) experience. The room was clean, quiet, perfect. The view is magical. We've discovered that not every concierge lounge is open all hours as the one at the Poly is. Even if there's no food service happening, you can go in early in the morning or late at night to read or watch TV while the family is sleeping. The refrigerator is unlocked, so you can grab soda pop any time.
There's an upstairs section of the lounge, too, with a large bathroom. When we've had a late plane out from Orlando, we check out by 11 am and then go to the parks. Later we can change into our warmer flying home clothes in the bathroom. Your pass key for the Hawaii building remains useable until midnight of your checkout day. So we change clothes and grab a quick snack before heading to the airport. Can't beat that for convenience.