Not a parkup. It's the entrance to paid parking next to a busy road. Very busy and no space. Would avoid.

Free parking place for night, not for camping, place is in front of the ramp, with security guy who guards cars behind the ramp 24/7 ...15m near is the promenade by the dunau

I parked here for almost 2 days and had absolutely no problems. its right at the very long board walk, there is a security guy checking service cars 24/7 so its even kind of protected. its 1 km from the old town/castle. the tram is a bit loud if you want to sleep here.