Stray has accommodation in which there's no time to relax (7)
I believe the answer is:
digress
'stray' is the definition.
('digress' can be a synonym of 'stray')
'accommodation in which there's no time to relax' is the wordplay.
'accommodation' becomes 'digs' (student accommodation).
'in which' is an insertion indicator.
'there's no' indicates named letters should be taken away.
'time' becomes 't'.
'to relax' becomes 'rest' (I've seen this before).
'rest' with 't' taken out is 'res'.
'digs' enclosing 'res' is 'DIGRESS'.
'has' acts as a link.
(Other definitions for digress that I've seen before include "Leave the main subject" , "Wander from a topic" , "Go off the point" , "Get off the point" , "Turn aside (from the main subject?)" .)