Coffee served outside below key washing-place (11)
I believe the answer is:
launderette
'washing-place' is the definition.
I can't tell whether this defines the answer.
'coffee served outside below key' is the wordplay.
'coffee' becomes 'latte' (type of coffee drink).
'served outside' means one lot of letters goes inside another.
'below' becomes 'under' (synonyms).
'key' becomes 'e' (musical key).
'under'+'e'='undere'
'latte' going around 'undere' is 'LAUNDERETTE'.
Can you help me to learn more?
(Other definitions for launderette that I've seen before include "self-service establishment" , "Scene of washing machines" , "high street establishment" , "Place for washing and drying clothes" , "shop that's cleaner" .)