Possible Clues:

• Hotel in Piccadilly, London
• Swiss hotelier, who founded an international chain, d. 1918
• The --, London hotel
• Upmarket hotel
• Big name in hotels or crackers
• Town House crackers alternative
• 'Puttin' on the ___'
• 'The Diamond as Big as the ___' (Fitzgerald story)
• César of fancy hotels [subscribe to great weekly puzzles at avxwords.com]
• Like the myth of Ragnarok