@Lor8261,
I noticed that you offer a weekly and a monthly discount. Please be aware that there are guests who try to shorten long-term stays to take advantage of large discounts when they always intended to stay for a shorter period. When a stay is shortened the rate isn't adjusted to what would have been charged if it were the original reservation period. So, a guest may book for a month-long stay to get the large discount, and then say they need to cancel after a few days (a duration that wouldn't receive a discount). They ask the host to cancel the reservation, because this will provide an automatic refund.
In the future, if you have this type of situation again and you want to agree to shorten the reservation, you can tell the guest that you will change the checkout date, and adjust the rate to match the length of stay.