Generally Warsaw is a very safe place and its very unlikely that you will become a victim of a crime. Nevertheless, use commmon sense as you would do anywhere: watch your belongings especially on public transport and in crowded areas.
Is it worth going to Warsaw?
But, is Warsaw worth visiting? I am happy to say that the answer is yes! Warsaw offers so many things to do and see and has everything you want when youre going on a city break; incredible landmarks; beautiful old town streets and squares; lively parks and gardens; cool museums; hearty local food; vibrant nightlife.