Any use that leases living space for less than 30 days cannot be considered a residential dwelling.

The reality is I will likely use it 3-5 times a year, 2-6 days at a time.

I would love to meet up and talk shop one day.

The challenge for present day investors is with elevated mortgage rates and record high housing prices, the carrying costs and incentive to invest now can be restrictive. 

I'd be worried if people were coming to the home for his business, but if he's simply using the address (same as a PO Box, though to me that would send up a red flag for a business to have a Box #) I wouldn't worry about it.

One cool thing is that while ACH transactions take about 4 days to fully settle, rentec direct’s payment processor gives you next day credit for those funds.  

Some cities, you send in your rent 2 days late and you might as well include the late fee.

Personally I would make a new listing on my own account and contact each guest asking them to rebook at the same rate on your new listing. 

I'll be traveling the next 14 days, so it will be a little bit until I can respond.

You will cut your cost of living down, and build equity at the same time.