Experience Rubens' final piece hung in gallery (5)
I believe the answer is:
taste
'experience' is the definition.
(taste can mean to experience or try out)
'hung in gallery' is the wordplay.
'hung' becomes 's' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'in' indicates putting letters inside.
'gallery' becomes 'tate' (Tate Modern, Tate Britain etc).
's' inserted within 'tate' is 'TASTE'.
'rubens' final piece' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for taste that I've seen before include "Sample - discrimination" , "Fine perception" , "Selectivity" , "style" , "A sense; briefly sample" .)