In summer, can tiler accommodate something commercial? (10)

I believe the answer is:

mercantile

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'commercial?' is the definition.
('mercantile' can be similar in meaning to 'commercial')

'in summer can tiler accommodate' is the wordplay.
'in' indicates a hidden word.
'MERCANTILE' can be found hidden inside 'summer can tiler accommodate'.

'something' is the link.
I am not very happy about this link. It may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for mercantile that I've seen before include "related to business" , "Relating to (overseas) trade" , "Relating to trade or commerce" , "Commercial" , "Dealing with trade" .)

I've seen this clue in The Irish Times.

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