A rise possibly in accommodation for caravanners (5)

I believe the answer is:

serai

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'accommodation for caravanners' is the definition.
I can't tell whether this defines the answer.

'a rise possibly in' is the wordplay.
'possibly' indicates anagramming the letters.
'in' is an insertion indicator.
'rise' with letters rearranged gives 'seri'.
'a' inserted within 'seri' is 'SERAI'.

Can you help me to learn more?

(Other definitions for serai that I've seen before include "Eastern inn" , "it'll refresh in the desert" , "Khan" , "Desert inn; raise (anag.)" .)

I've seen this clue in The Globe and Mail.

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