First time investor considering tenant occupied properties

[Damien Helm-brophy]

I am a 22 year old father from suburbs outside Philly. I’m pretty familiar with the biggest areas of the city, & I’ve been dying to buy a rental property there. I was considering a small property for Airbnb/short term rental conversion, but I’m worried about the initial cash flow & the possible inability to book stays. I’m now considering already occupied long term rental properties for a number of reasons, mainly the guaranteed instant income to cover my mortgage. Any suggestions for someone’s first rental property purchase? I do NOT have tons of cash to throw away either as I have a family and I just bought my first home last year. I know all investments are risky, but I’m trying to lean towards “safer” options for beginners. 

Thank you in advance! :)