Crossword Genius

A bookie's that might be mistaken for heaven (1,6,5)

Ross

I believe the answer is:

a better place

I'm a little stuck... Click here to teach me more about this clue!

'heaven' is the definition.
(thesaurus)

'a bookie's that might be mistaken' is the wordplay.
I cannot quite see how this works, but
'a' is present in the answer.
'be' could be 'place' (placing is a kind of being) and 'place' is located in the answer.
The remaining letters 'better' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

'for' is the link.

Can you help me to learn more?

I've seen this clue in The Irish Times.
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