It's in a part of town that's in the process of ... civilising, I guess. (As I wouldn't say it's gentrification). We're talking Detroit here.
So lots of youngsters, 20s to 30s, growing restaurants, bars, businesses nearby. But limited scope for big capital growth medium term.
Might be worth giving someone half price rent to manage the property, because as you say, a 4 plex in this part of town sounds like a lot of hassle.