Invest in small multi unit in Chicago south suburb

[KC Zhang]

Anyone invest in 4-plex, 6-plex in Chicago south suburb? I came across few listings that look good on paper. For example, one 6-plex list for about 80k, and market rent is around $800/month /unit on rentometer.com. Definitely in low income area, so tenant turn over could be high. Crime rate seems low. Even with high property tax, if you get $500/month/unit, the numbers still look very good. Is this too good to be true? Is this area a good place to invest in small multi buildings? Would love to hear your story. 

Thanks 

Casey