Allentown is still low income and developing slowly but nearby Bethlehem is doing well in recovery from the downturn.

My tenants were used to paying cash, since the property manger used to live near by and would go collect.

Suddenly  the address is messed up cause Zillow can't figure out why there is a 123 SW 1 STREET that's owned, but 123 SW 1 STREET UNIT C for rent, there isn't a good match and your data is purged or scrambled, and the location marker for that property goes to a nearby intersection instead of on the property.  

Be sure to include information about nearby attractions, public transportation, and local schools.Accurate information: Ensure that all information provided in your listing is accurate and up-to-date, including the rental price, property details, and availability.Timely updates: Keep your listing updated with any changes in availability, pricing, or property information.

So your homework is to call/contact 10 credit union nearby.

A lot of it's timing in the market, nearby competition, and knowing who is actually looking to expand. 

I'm currently priced out of Brooklyn as the homes here are almost always (1M +), so I started looking into nearby areas like Staten Island, which seems more doable at first glance..

Regarding the nearby school in Hoboken, many people I've known decided to live in Hoboken just for the nightlife or on Steven's campus.As others have mentioned Rutgers in New Brunswick would be great as that is a very large school with a big mix of commuters and non-commuters.

If you want a good example go secret shop a nearby apartment community and ask them what their move in costs are. 

Attend events, make connections with nearby investors, property managers, and real estate brokers, and look for mentors to help you along the way.