Here you put in a flat - house for renting.
Remember if you want a new room to the accommodation you dont put it in here. Go to accommodation setup and change the excisting accommodation you have.
Give the new accommodation a name. Tell the min. days you want the booking in advance from the dropdown box.
Tell the min. bookingsdays you want the booking from the dropdown box.
Tell the min. days you want the cancelation in advance from the dropdown box.
Click on "Add"
Then go to accommodation setup and put all information about prices, season, beds etc.