We leave it on full time and have our cleaning people drain it after each stay.

A teacher has to buy within the boundaries of their district with no exception(not even a block as I had a buyer for one). 

Louis as you know can be very block by block and requires some inside expertise in order to ensure a profitable investment.

By all means buy the cheapest house on the block in a good area.also remember rents increase over time, so something that is not quite cash flowing may in a few years.

1 - yes2 - I don't think that the drain from your house to the main sewer falls under the "Municipal Sewer" category that @Joshua Thompson mentioned, but I would have to check before giving a verdict.

Putting value add on top of that can be a great way to build a passive portfolio that doesn't drain your will to live.

Areas like Fountain Square, Bates-Hendricks, and Irvington have seen revitalization, but you’ll want to do your homework on specific blocks.

If your current guest calls Airbnb or Vrbo or wherever they booked, the platform will cancel and block your calendar anyway until you can prove you are free of bugs. 

One thing is upper darby Varys block by block so definitely scope out where your buying cause some parts are worse then others.

Loan:$20k down, 3 year balloon, 4% interest amortized over 30 years.Sale: $727,000This was a 4 unit property located a few blocks from the beach in Panama City Beach Florida.We decided to sell due to the amount of work needed with no renovations and sold for $727,000 less than a year later.