Escape Allergies with in-Room Air Purification System. Allergy and envirnomentally designed with in-room air purification system, the The 1 King Bed Allergy Friendly Room includes hardwood floors, blinds, all cotten linens and 100% non-smoking O'Hare hotel room. Completely redeveloped from the ground up, each allergy friendly room 42-inch flat-screen HD televisions, executive desk with WiFi (nominal fee) and two telephones with dataports and voicemail. Create a personalized in-room listening system utilizing your iPod, CD player or other portable device with our Hilton Alarm Clock Radio. Each guest room offers coffeemaker, hair dryer, iron and full-sized ironing board, refreshment center, dry cleaning service (nominal fee), self and valet parking (nominal fee). Hilton Chicago O'Hare hotel is the quietest hotel, with no planes flying directly over the hotel.