Your income and expenses for renting out your basement most likely go on schedule E.
If you provide "substantial services" to your guests such as regular cleaning, changing linens, or maid service, you can report this on schedule C. Think hotel owners.
Typical basement rentals go on schedule E.
An example of a "personal property rental" that would be reported on line 21 and 36, is if you rented a vehicle or equipment that you own. Real estate is not considered "personal property."
