I have been to Venice before but would like to get some dining suggestions this time. I am looking for small, trattoria type restaurants that the locals will go to - preferably not touristy at all. We speak Italian, so no English menu is needed. I am looking for a more authentic dining experience. We will be staying near San Marco and prefer something we don't have to walk far to or we can take the vaporetto to easily. We will be travelling with my mom who is in her 70's and I don't want her to walk too far. Any suggestions appreciated. Thanks!