Posh hotel (4)
I believe the answer is:
ritz
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">posh hotel</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ritz that I've seen before include "(Expensive) London hotel" , "Puttin' on the -- (song)" , "Elegant hotel" , "Swiss hotelier, who founded an international chain, d. 1918" , "Swiss hotelier, creator of a chain of elegant hotels, d. 1918" .)