Yearly costs are $6000? Is that maintenance/taxes/utilities, or does it also include the opportunity cost (from investing the equity elsewhere)? Is the $6000 cost include all AirBnB revenue as well?
How much do you use it, and how much would it cost to periodically rent the same kind of place?
Just as a thought experiment, let's say it's worth $300k and it's paid off, and the $6k is your cost of upkeep (maintenance, taxes, etc). That's $12k/year in foregone gains, plus $6k/year in maintenance costs. If you flip the situation on its head, $18k/year will pay for a lot of time in some other AirBnBer's cabin.