That is a tricky question to answer without more details.

Here are a few suggestions on how you can maximize the wealth of information available: Check out the blogs and podcasts, or take advantage of the search feature (magnifying glass).

Steadily wrote a policy for me with these features on a Builders Risk policy. 

I didn’t know the details about a project we’re working on, and it showed.Lesson learned: Always prepare thoroughly before each call and be ready for unexpected questions.Failures like this are uncomfortable, but they're how we grow.

Perhaps take a look at:  https://www.loopnet.com/ and see which types of commercial lease listings interest you and from there take inventory of which brokerage and listing agents are prominently features in the space that interests you.

Adding more details can help get better advice. 

Forgive me for saying, these statements and details appear to be in conflict. 

The house has been featured in magazines and garden tours and is valued around $1.8M.

Quote from @Patricia Anne Cawood: Can you give me more details about your deal first? 

For the listings that are struggling, try using the calendar promo feature on Airbnb to help boost visibility.