The low rating here is entirely to do with the condition of the property.
On arrival, there were multiple filled trash cans completely blocking the entrance - it took us multiple tries to ram the door to get enough space to squeeze by and move them from the inside. Once we got into the property, we quickly noticed that there were bugs absolutely everywhere. Not an issue of flies here and there due to food left out, but full on swarms of gnats in every room. Finally, upon a simple walk around the home, we noticed that the flooring within the second bedroom - adjacent to the exterior facing doorway - was completely torn up, with dirt and other gunk on full display. This was covered by a rug to hide the condition.
Upon outreach, Mark was very understanding and apologetic, including offering to put us up in hotel for a few days to allow for an exterminator to come in. Given the timing of arrival, the hassle of the constant movement, and the inability to fix the flooring issue (which truly made us feel unsafe to use that room), we had to take him up on the offer to cancel and refund the whole stay and we had to scramble to find alternative accommodations at the last minute (for a 2 month stay).
Beyond the condition issues - which I hope can and should be resolved quickly - the location of Mark's property is great and the space is largely as described. There were a few minor issues (e.g., no soap or toilet paper, no remote control for the cable box to change the channel, etc), but the unit was otherwise as described. Additionally, his communication prior to arrival and for issues following check-in was very prompt and helpful.