If you choose to vacation at a 4-star hotel in Killen, you'll typically find loads of amenities to keep you relaxed, such as a pool, gym and restaurant. You can enjoy top-quality service and upscale surroundings. Choose a 5-star hotel and you'll have access to a few extra perks — think around-the-clock concierge, on-site spas and opulent turndown services. You'll most likely get additional amenities and exclusive services at a 5-star retreat, but both are fabulous options for luxury travelers.