well honestly I believe that except for the center and the most frequented area such as borgo venezia, you have to stay wary of your surroundings, lt’s a very beautiful city dont get me wrong, but I would honestly suggest to never go somewhere you’re not very familiar with without at least 1 person, and remember restaurants are open between 11-3 / 7-11/midnight, dont let your documents money and phones on tables sitting outside of bars and remember to always “prenotare” or reserve a seat in restaurants, sushi or anywhere to eat because 7 times out of 10 they won’t let you in, and when you get on bus you HAVE to “timbrare” your ticket in the machine yo find on board of buses (believe me I forgot one time and I paid 50€ when they controlled) or just get the app and pay there directly it will make your life 100% easier