I don’t see any reason why you can’t rent condo for a year and come and go. Nobody cares. 99.9% of the time bit even immigration.
However- make SURE you turn off water to the unit when you head out. A burst toilet hose or something of the sort can ruin your whole day and leave you with a huge bill for repairs.
Yeah, the randomness of the enforcement is frustrating.
I believe European authorities are increasing their vigilance due to an uptick in trafficking caused by the massive numbers of refugees caused by the Russian war on Ukraine’s civilians.