Initially its futile keeping hotel with no outside help

I believe the answer is:

inhouse

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'initially its futile keeping hotel with no outside help' is the definition.
I can't judge whether this defines the answer.

'initially its futile keeping hotel' is the wordplay.
'initially' says to take the initial letters.
'futile' becomes 'nouse' (I've seen this before).
'keeping' is an insertion indicator.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
The initial letter of 'its' is 'i'.
'nouse' placed around 'h' is 'nhouse'.
'i'+'nhouse'='IN-HOUSE'

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I've seen this clue in The Daily Mail.

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