In sea arrangement for Tuscan destination (5)

I believe the answer is:

siena

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'tuscan destination' is the definition.
The definition suggests a singular noun which matches the answer.

'in sea arrangement' is the wordplay.
'arrangement' indicates an anagram.
'in'+'sea'='insea'
'insea' is an anagram of 'SIENA'.

'for' is the link.

Can you help me to learn more?

(Other definitions for siena that I've seen before include "Italian location" , "Walled city of Tuscany" , "somewhere in Italy)" , "Italian city strangely in sea" , "city in Italy" .)

I've seen this clue in The Irish Independent.

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