To be honest, I don't think it's anywhere as dangerous as people say. Yes, you will get mugged if you walk around flashing gold chain; but if you walk at a reasonable speed, walk like you know what you are doing, belongings hidden, then I don't think there is a problem. I never felt unsafe while I was there, well, except this one time at 11 PM when I took a streetcar back to hotel, and there was a guy onboard who was quite agitated and was on his own (he clearly was on the verge of suffering from a mental health episode), and I just kept an eye on the situation. Which is why, I went cheap, no taxi, just $5 public transport day pass every day and every night.