Like @Alan Asriants and @Matthew Paul said location, location, location, an area during the day and night are very different things in Philadelphia.While the cashflow might be great, the greater the risk the greater the reward, but there are still plenty of other areas where you can get 200-400/month without being near the largest open air drug market on the east coast.

I'd look into Air BnB, VRBO, Furnished Finder, PadSplit, and perhaps even booking.com (I know a lot of STR operators use this, not sure of MTR potential but worth checking out). 

Kudos to her.I do inspections on all of my properties every three months when I go in to change the air filter, check for leaks, and general cleanliness.

I don't know what the ratio is, I'm just pulling that number out of thin air.

A: "Oh, I don't actually live here, I'm just staying here for a few weeks with a friend"A: "The seller just asked me to stay here because people kept breaking in and vandalizing the place, that's why the appliances are gone"A: "I love all the neighborhood pets, but I absolutely hate the business next store because their air conditioner squeals when it runs ALL SUMMER!"

I've seen plenty of people add small kitchens for Air BnBs so I assume it is.

I joined bigger pockets a while back but had to focus on paying my way through school and passing a dual major in Chemical Engineering and Paper Science Engineering.

That's what I think a fair price is.It does depend on how far it is to the roofing supply store, how far it is for the workers to travel, if there's any rotting wood that needs to be replaced and how busy they are (busier = higher profit).You could buy a couple ladders, a compressor, a 100ft extension cord (14/3), 50 ft of rubber air hose, a roofing nail gun, a caulk tube a couple shingle removers and pick up some day laborers who know how to roof. 

I joined as a renter to check it out it and saw a property from American homes 4 rent, it seems similar to hotels and air bnb.

It was an out of state investor that wanted the property to list as an Air BnB.