The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Intelity Solutions:
Central Park, Fifth Avenue, spectacular art, thriving culture, endless shopping, unbelievable dining and lively nightlife this is New York City. Amid the whirl of excitement you will find The Plaza, a Fairmont Managed Hotel, a timeless landmarked New York hotel capturing memories since 1907. iPhone users can now experience The Plaza Hotel in New York City even before they arrive. Whether you are a guest of The Plaza, a visitor, or a hotel connoisseur, this app will give you access to the ultimate luxury lifestyle destination. All users can learn about hotel services, amenities, and area attractions, while users staying at the hotel can order room service, request a butler, schedule a wakeup call, and much more!