@Inbal Probably because it is rare to find guests who are looking for a minimum of 4 months stay in your region so your listing is appearing in the search list of guests who are looking for 2 months. Remember that most guests on Airbnb are looking for short terms stay! I would advice you to become a little bit more flexible and accept guests who are willing to stay atleast 2 months. You are missing a lot of opportunities to earn more money. Good luck!!!