Tavern hosting sex-party and massages, low life's beginning to upset local modernists (10,5)
I believe the answer is:
bloomsbury group
'tavern' is the definition.
Both the answer and definition are singular nouns.
Perhaps there's an association between them I don't understand?
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for bloomsbury group that I've seen before include "Literary people" , "1920s London writers' circle" , "set of intellectuals" , "Fry part of it" .)