Great disappointment, where you’d stay single (10,5)
I believe the answer is:
heartbreak hotel
'single' is the definition.
(single by Elvis Presley)
'great disappointment where you'd stay' is the wordplay.
'great disappointment' becomes 'heartbreak' (heartbreak can mean disappointment or upset).
'where you'd stay' becomes 'hotel' (a hotel is a place to stay).
'heartbreak'+'hotel'='HEARTBREAK HOTEL'
(Other definitions for heartbreak hotel that I've seen before include "A number in fifties" , "big hit record" .)