Attractively unusual (6)
I believe the answer is:
quaint
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">attractively unusual</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for quaint that I've seen before include "Attractively odd" , "Olde worlde" , "Twee" , "Picturesque" , "Curious" .)