<prompt> Translate the following text to EnglishMtaa wa Mercerie una maduka ya ubora mzuri ambayo yanaongezeka kwa bei ya wastani wanapokaribia Rialto kutoka Piazza San Marco; hivyo pia eneo la magharibi mwa Piazza San Marco.  <response>: The shopping street of Mercerie has good quality boutiques growing progressively moderate in price as they approach the Rialto from the Piazza San Marco; so does the area west of the Piazza San Marco. 