Searched for somewhere to sleep (6)
I believe the answer is:
probed
'searched' is the definition.
(I've seen this before)
'for somewhere to sleep' is the wordplay.
'for' becomes 'pro' (as in being 'pro' something).
'somewhere to sleep' becomes 'bed'.
'pro'+'bed'='PROBED'
(Other definitions for probed that I've seen before include "Examined, dug into" , "Investigated closely as dentist does a tooth" , "Physically examined" , "Did research" , "Searched" .)