This seems like a marketing ploy that might appeal to a small group of travelers. 

Its proximity to Greenville makes it an appealing option for buyers and renters seeking value.

Your focus on location and terms over price resonates, these are often the most important factors for long-term success, and it’s clear you’ve mastered that.I also appreciate how you made small improvements while living in the properties to increase their appeal as rentals.

Allen determined that the no down payment concept would have tremendous appeal to people wanting into real estate but who had limited or no capital to invest.  

New neighborhoods might lack amenities at first, which could make them less appealing to potential tenants.

Tenant stipulates, represents, and warrants that Tenant has visually examined the Premises, and that it is, at the time of this Lease, in good order, repair, and in a safe, clean, and habitable condition.

Repetitively. it's OBVIOUS that something happened and my bet is exiting tenant, vendors who were in, or this new tenant but your NOT gonna know who or what until you get it scoped and find out what the impaction/build-up is and from visual a guesstimate of how long it's been down there. 

I’m curious to know what strategies you use to keep your listing fresh and appealing.

This is appealing for short-to-medium term gains, especially if you’re confident in your ability to refinance or sell in 15 years.

My initial plan was to do a house hack in whatever market I find appealing.