If you are merely "competitive" with other postings, there is no reason for a potential renter to contact you versus someone else. If you really want to rent, consider listing your week at the low end of what you see in other ads.
For more help with renting, see the "how to rent" article at the top of the list of topics for this Buying, Selling, Renting forum. And see the list of rental and resale sites frequently recommended by TUGgers. It's located in the same place.