Namely, you'll want to plan for maintenance, capex, and vacancy (echoing the wise words from @Pete Harper and @Jaron Walling!).

It does not appear the sub-floor or walls were damaged and no apparent mold.

(*If you're looking to go a little bolder, something like the Adessi Kavala Matte White Hex tile is a super cool option for a bathroom floor or accent wall in the shower or tub area.Floors: Do you have wood floors?

General condition issues like holes in the walls/issues with windows, broken flooring.

Insurance, by definition, is a contract between you and the insurance company. The contract stipulates that as long as you pay the premium, the insurance company agrees to pay for your covered losses if you experience...

This is a "grandma" property that has new windows, and mostly needs cosmetic work like peeling wall paper, repainting, pulling up carpet to reveal beautiful original hardwood.

Because I read that Schedule 80 PVC has thicker walls and can handle higher pressure. 

I don't waste my time discussing or looking at anything on the north side but to each there own.

What happened to this section of foundation wall on the old plans that doesn't see to exist today?

When the market (Both RE and Wall Street) turns, we'll deploy those idle funds and our equity into purchasing more investments.