Dwelling uselessly on health resorts, one raised cries of approval (8)

'cries of approval' is the definition.
'hosannas' can be an answer for 'cries' (hosanna is a kind of cry). I'm not certain of the 'of approval' bit.

'dwelling uselessly on health resorts one raised' is the wordplay.
I cannot really see how this works, but
'one' could be 'an' (an apple is one apple) and 'an' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?