STR advice/suggestions

I'm new to the Booking.com site and I am finding it a bit difficult to understand how to list my STR properly.  Since it is an entire home I have it listed on other sites for a minimum of 3 nights.  I could drop down to two nights, but would love some advice.  I have had my STR for a year now and it is in a seasonal location since we have a very popular lake and attract major fishing tournaments. Any advice would be appreciated. Thanks.