Since I don't know your market or your risk tolerance, I will respond as If this building came up in my area and whether or not we would consider an offer on it.  

And you have or should consider an interest expense on your money as well.

You might want to consider an industrial hygenist.a company called Modec (web addy is deconsolutions dot com) sells cleanup chemicals for meth labs.

A true hard money lender will not ever consider an investment property because they (like most all lenders) consider investment property financing to be head and shoulders riskier than any other type of lending, including forclosure bailouts, which is what most hard money lenders deal in.

When they consider an average  seven day stay how is that exactly calculated? 

Consider an adjustment for final pay and get several bids to complete properly.  

If I were the buyer, I could complain for false advertisement, I don't consider an appliance purchased 18 months ago as new, new is within 2 months, really, this would win in any small court claim.

And with technology why not consider an app. 

If you are serious about this, you might consider an expert coach after trying on your own.  

I would consider an SFR, but it seems like multifamily properties have better opportunities for cash flow.