You won't be shot waiting for a bus... Gun violences is rising, but it's very low. Knife violence is what is high. My teacher assistant was a police officier, he said if guns were swapped out with knives, there'd be over 100 murders a year, die to all the stabbing. But you see, Canada has great, free health care, thus why most stabbed victims survive.
Winnipeg used to have the hugest auto theft rate if the world, still high, has dropped enormously.
Downtown is dangerous at night, potentially you will be mugged. But during the day, it's pretty safe.
If you ain't involved with gangs and all, you should be fine. Just like in any other developed nation city. Detroit or Chicago have huge murder rates, but most are gang related, especially in Chicago.
As for the austhetics of the city, many people say its dull and dirty... I guess that's for you to decide though.
Just keep put of potentially dangerous situations, you'll be fine. Just dont associate with gang members there, there ruthless.