Convincing information in bed (6)
I believe the answer is:
cogent
'convincing' is the definition.
('cogent' can be similar in meaning to 'convincing')
'information in bed' is the wordplay.
'information' becomes 'gen' (gen is a kind of information).
'in' indicates putting letters inside.
'bed' becomes 'cot' (cot is a kind of bed).
'gen' going inside 'cot' is 'COGENT'.
(Other definitions for cogent that I've seen before include "Well-reasoned" , "Compelling (argument)" , "Convincing, persuasive" , "Convincingly argued" , "Strong" .)