As first-time landlords, we rented our small condo on a month-to-month basis to our nephew and his girlfriend without a written lease. The girlfriend moved out and the nephew moved in a buddy to help pay the rent. Then the nephew moved out and now we want to serve the remaining party with a 30-day Notice to Terminate Tenancy. The rent is current as of now.
Is there anything we need to be careful about since there is no written lease?