Five Star Hotel ?

What are the conditions for classifying a hotel as five star hotel? ANSWER TO THE ABOVE QUESTION I think these are some condtion to consider hotel as 5 star it should have pool Reception opened 24 hours, multilingual staff - Doorman-service or valet parking Concierge, page boy - Spacious reception hall with several seats and beverage service - Personalized greeting for each guest with fresh flowers or a present in the room - Minibar and food and beverage offer via room service during 24 hours - Personal care products in flacons - Internet-PC in the room - Safe in the room - Ironing service (return within 1 h), shoe polish service - Turndown service in the evening - Mystery guesting