Getting a great night's sleep on this at ryokan, auntie regularly becomes quite gushing like this (8)
I believe the answer is:
fountain
'ryokan auntie regularly becomes quite gushing like this' is the definition.
The definition suggests a singular noun which matches the answer.
'getting a great night's sleep on this at' is the wordplay.
'getting' is a charade indicator (letters next to each other).
'great night's sleep' becomes 'fount' (I am not sure about this - if you are sure you should believe this answer much more).
'on' says to put letters next to each other.
'this at' becomes 'in' (synonymous in some cases - eg at school, in school).
'a' put after 'fount' is 'founta'.
'founta'+'in'='FOUNTAIN'
Can you help me to learn more?
(Other definitions for fountain that I've seen before include "Man-made jet of water" , "Origin" , "Artificially produced jet of water" , "Ornamental water feature" , "Whence jets are sent up" .)