Every refectory in every convent or monastery wanted a cenacolo or scene of the Last Supper, and although Leonardo da Vinci painted his in Milan, there are plenty to see in Florence and around:
Santa Croce by Taddeo Gaddi, located under his fresco of the Tree of Life
Santo Spirito (now part of the Fondazione Salvatore Romano) by Andrea Orcagna, although here the Last Supper scene, under the Crucifixion has been badly damaged and only two figures survive. Also the recently reveal last supper by Bernardino Poccetti in the cloister of Santo Spirito itself.
Image by PD Art