Holiday house in Strasbourg I test (4)
I believe the answer is:
gite
'holiday house' is the definition.
(a gite is a French holiday house)
'in strasbourg i test' is the wordplay.
'in' says the answer is hidden in the clue.
'GITE' can be found hidden inside 'strasbourg i test'.
(Other definitions for gite that I've seen before include "French holiday home" , "Furnished holiday house in France" , "French holiday house" .)