Philly low income houses

[Meshael Eady]

I have been looking at the Philly market and correct me if i am wrong but a 60k house that is move in ready can rent for around $900 a month? Thats a pretty good return, my math says its above 12% after all things considered. My question (before asking where do i sign up) is what is the catch, what am i missing? I understand managing the tenants may be a headache, but I am confident the information i've been consuming here on the site, from the book (on managing rental property) and the bp podcast that i along with my "core 4" should be able to tackle most if not all issues in regards to undesirable tenants. All advice is welcome! Thank you!