Hi Hirda. I'm glad you enjoyed your stay - thank you! I'm sorry the parking was difficult for you. As it states in the post, cars are not allowed (by the City) to block the driveway of the building.
There is ample available, all day street parking throughout the neighborhood. That said, SF is a great City not to have a car in - to walk, us public transit like BART and Buses, bike, or use ride sharing taxi smartphone apps (like Lyft and Uber).