The room was above all I could have imagined, with its own entryway and complete living room. I had a room without an onsen. The public onsen was okay, but not really spectacular. If you like a city view, it's good. From the women's onsen, the airport runway is visible and the flight take off times listed, so if you'd like to see planes take off, it's nice.
My regret is not reserving a dinner or breakfast. Beware, you can't easily reserve last minute, so do it when you make your initial reservation or call them. I think they do have some pretty spectacular meal options in a lovely environment, but you must have a reservation in advance to experience it.