Do short term renters count towards cohabiting limits?

In Raleigh, NC I believe there is a city ordinance that limits the amount of unrelated individuals living in a house to four people. My question though, does overnight lodging (eg. Airbnb) count towards unrelated individuals living in a house or could this be in excess of the four living there?

For example, if I were to buy a five bedroom house, live in one room, rent out three to tenants, and have sufficient parking, could I still use the fifth room for Airbnb and be in compliance with the law?

Any thoughts or experiences will be greatly appreciated!