@Betty-B--M-0
Establishing direct contact that would also disclose the exact location of your listing as well as your contact details is against the Airbnb rules. They do not want their hosts and guests to get together privately, conclude all sorts of deals and leave out the company to pay for the advertising and maintainance of their organization without any income for them. This alone stops you from showing your place to the potential guests before their booking.
I have a degree of understanding for the guests who wish to book long-term stays, and feel uneasy about taking all the risk upon them. Should this be the case, suggest a short stay first, and the possibly long-term stay later on.
Both the guests and the hosts are naturally tempted to circumvent the Airbnb especially if long and possibly costly stays are involved. It makes a lot of sense to think long and think hard about the possible consequences before taking such a step.
So, nope. Your listing is as good as it gets. If a guest has any specific question, etc., he is free to ask, and I am sure that you will gladly provide accurate replies. That's all there is to it.
Danny
Expert support for your listings in Palma de Mallorca, Spain