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' means one lot of letters goes inside another.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'it's disgusting' becomes 'ugh' (I've seen this before).
'alto' going 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" .)