While singer goes around hotel, it’s disgusting (8)
I believe the answer is:
although
'while' is the definition.
('although' can mean 'while' or 'yet')
'singer goes around hotel it's disgusting' is the wordplay.
'singer' becomes 'alto' (type of singing voice).
'goes around' is an insertion indicator.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'it's disgusting' becomes 'ugh' (I've seen this before).
'alto' placed around 'h' is 'altho'.
'altho'+'ugh'='ALTHOUGH'
(Other definitions for although that I've seen before include "Yet" , "Apart from the fact that" , "Whilst" , "Hugo, halt! (anag)" , "However, but" .)