I am interested to hear your thoughts on this!

Where in the world can you find the most refined (not necessarily 'luxurious') service?

• In the premier class of Airline X?
• In the premier suite of Hotel Y?
• In the dining room of a Michelin-starred restaurant?
• In a private home with trained butlers? (Only possible if the serving staff truly understands you?)

What are the unmistakable hallmarks?