Overnight stay not permitted. The top green sign says 3€ (updated price removed?). But it costs 5€ for parking ticket. Upto 2hrs is free using parking disc. Good place for a short walk to some stairs and bridges ans views - about 15min away. Many cars and motorbikes use this space to turn around or stop for a few minutes. Some shade. This area did not fill up, even though its peak season.