KLIA2 also has a brand new budget hotel owned by none other than Air Asia, and they have a great big (mainly fast food) mall between the hotel, street and airside. I stayed at this TUNE Hotel last year prior to my flight to Danang - very modern with a convenience store and restaurant, but no pool, and it is quite a walk from this area to your Air Asia gate. I was so glad to get out of Malaysia and into the welcoming arms of the Vietnamese once again.