I understand your frustration. Simply listing your tearoom in the standard commercial selling venues doesn't reach the specialized clients for your business. I have a hard time believing that you haven't gotten an offer yet--teachat is a good place to start. Try posting in the "Tea Rooms" category; there appear to be many individuals interested in getting into the business. Are you listed on teamap.com? You could add a note there as well. People also use the tea room locator at catteacorner.com, but I find it cluttered. And there's always the listserv teamail.net. I'd guess that any cafe/restaurant concept could be interested in your location, but this might be an outcome you're not willing to accept. Good luck, and best wishes for your health.