I’m going to take a wild guess here and say the developer had planned for this to be a parking space but the council limited the number of parking spaces (as they do) or realised they were smaller than the standard size and so rejected them, so the developers were left with designated areas that they couldn’t call parking spaces.
I really wouldn’t worry until someone tells you you can’t park your car there. When they do, as Sir Humphrey suggests, tell them you aren’t parking, you’re storing your car.
Or put up a notice asking if anyone with a spare car space would like to swap it on a semi permanent basis for a secure storage area.
Given the shortage of storage in most strata blocks, I’m betting you will get offers.