@Saj Johnson - Johnstown PA, study this market first, you will see it is a declining market, not growing consider this in your evaluation. What jobs are there, or were there that are no longer there? I too saw ads of this nature from this part of the state I grew up in, and talked to a seller who wanted to sell to me as he wanted out of the market to move away, have to ask the questions why would an investor want to move away if the returns are so good. Retirement, possible, but it could be a number of other reasons, the seller disclosed certain realities to me as a newbie from his 20+years in that market. Find that person to talk to.
Section 8 - where we are investing in PA the section 8 program isn't working the way it should, investors are out thousands owed by the section 8 program. Is it working in Johnstown, I don't know but I would investigate first.
Lastly, the low income housing, cheep homes, have to weigh in the repair factors vs. income to cover those costs. Consider crime where these are located. Consider vacancy rates, and non paying tenants or continually having late payments always wondering will you be paid this month or not, or should you evict are situations you can run into frequently with this type of investment. All of these things don't show up on a 25%-30% projections.
Trust me, we have had some of these issues, in similar neighbourhoods, if you can manage this and find a way to be successful at it, it could be a great niche to get into, some do, others loss out and give up investing all together as result of the headache. Use caution, and gain enough knowledge and you will know soon enough if it is for you or not.