How to approach AirBnB owner to buy their adjacent lot?

[Nate Burgher]

We’ve stayed at the same AirBnB a couple of times and found out yesterday from their neighbor that the owners property is actually two lots, and they’ve waffled over many ideas of what to do with that second lot for years. Our young family absolutely loves it here, and have been looking for property in this area for about a year. 

I’m curious on how we should approach the owners to inquire about buying their lot adjacent to their AirBnB? I know AirBnB provides a certain sense of security and privacy, so I don’t want to invade that and come off the wrong way. But I’ve already done research on the parcel itself from the county’s website and have all the info out there. Should I just send them a simple message over the AirBnB app? Should I leave a note with the neighbor to give to them? Should I send the owners a letter in the mail? Any other suggestions?