Wiersema if you have visible & functioning K&T, most insurance carriers will require you to replace it before they will insure it.You may be able to find some insurance carriers who will over look it, but they wont be the most affordable option.  

I would expect all "common" entrances, such as a back door for laundry room, to be locked at all times...simply put a "storeroom" function handset on it so it is always locked.

It could use some polish, but it’s free and functional and syncs perfectly to their systems 

It's a function of affordability and available market in a range.The other bigger consideration is that if you buy a second property as an investment you do nothing to dilute or jeopardize your primary residence exclusion. 

A functioning economy requires a safe place to store your money. 

Im a fireman so my schedule rotates everyday.

Sounds like you're providing them with their 1st exercise in recycling.I provide keys and a clean/functional living space.

The echo is a no, it won't work anyway, it requires an account holders phone to be present in the house to function, or to leave a tablet in the house signed into the account, most don't know that.  

Large Parking space for 4 cars. 3rd bedroom has a separate private entrance and currently FUNCTIONS as a studio rental unit.

When the inspection came back this is what was said about the roof “The composition shingle roof appeared to be functioning as intended at the time of inspection.