Renting it out for part of the year
How rental income is treated depends heavily on how many days the property was rented and how many days it was used personally. There is a specific day count below which short-term rental income may not need reporting at all, and above it the property becomes a rental with expenses that must be allocated between rental and personal use. The two outcomes are very different, and which one applies is a matter of counting days accurately — so keep the calendar as you go rather than reconstructing it in April.