do the train stations in Venice, Italy have lockers to store luggage? I would need a carry on suitcase stored for up to 2 weeks. If they do not is there another alternative? Bus stations? Air terminals?
Here is the info on storing luggage at Venice Santa Lucia station. For security reasons you will not find locker storage. http://www.grandistazioni.it/cms/v/index.jsp?vgnextoid=09dd82a9ec4eb110VgnVCM1000003f16f90aRCRD
You could ask the hotel at which you are staying to hold it until you return.