Previous Home Status After Purchase of New Home

We bought a new home in another state at the end of 2019.  Our old home was not ready to sell so we allowed friends who were in financial difficulty to stay in the home rent free until we were ready to sell it.  Most of our furniture and other items were still in the home.  Then Covid-19 hit making it very difficult for us to get the home ready.  That combined with our advanced age ultimately caused us to decide to sell to a house flipper in 2020.   How do we characterize the time that we were not using it as a primary residence?