Article of note about hotel (3)
I believe the answer is:
the
'article' is the definition.
(the definite article in English)
'note about hotel' is the wordplay.
'note' becomes 'te' (musical note).
'about' means one lot of letters goes inside another.
'hotel' becomes 'h' (phonetic alphabet).
'te' enclosing 'h' is 'THE'.
'of' is the link.
(Other definitions for the that I've seen before include "Over - - moon" , "The most frequently occurring word in the Bible (and in this clue!)" , "Article is quite definite" , "French drink" , "That particular one" .)