You can translate it yourself and place both English and French versions on the listing. If it is only in English you will attract English speakers and vice versa. As an English speaker I would choose listings I could best understand to make my inquiries.
If you are comfortably bilingual you can state that in the listing and more guests will be attracted to your place. Of course, any guest can translate anything on line but sometimes the on line translations don't convey exactly what you wanted to say so it is better that you provide the text in both languages.
If you only want to get inquiries in English, leave the English as the main language. Otherwise you may find yourself trying to communicate in French with prospective guests.