I have set my minimum stay for 2 nights and it has been like that for a very long time. Why is it that someone has just been able to book for a one night only? This is very concerning for me.
Very strange indeed because all of the dates I tried on your calendar over several months show that there is a minimum stay of 2 days. A glitch? A phone call to CS may be the only answer to see if they can cancel with NO penalties to you of course.