I'm a first-time TT user. We own and live in a three-flat. While renovating, we've rented apartments out through AirBnB. We've moved between units at various times to allow us to work more easily on stuff which needed doing (painting, etc). We know how many days we rented each unit last year. Do we treat each apartment as a separate rental for the purposes of taxes (so, three rentals instead of one)?