If it's like the Crowne Plaza, it's the same bus company, but different bus. It won't go to the airport, it just goes back and forth to Aeon Mall with maybe 1-2 stops at other hotels. Aside from the mall if you don't mind the long walk, you can also get to the temple, but it can get hot during the day. From there you can take the train back to the airport and take the shuttle from the airport to your hotel or walk back and stop at the Mega Don Quixote. There is also a nice onsen near the airport that was pretty good.