Immediately after the publication of the announcement, the activity of customers who want to see your apartment will be very high. Most likely you will have to receive several visitors in one day. To somehow unload this «traffic», try to describe the apartment in great detail and it is extremely desirable to add photos to the description. In this case, the number of calls to you will be significantly reduced, and on the other hand, it will be precisely those to whom it fits most of the criteria will come to see housing.