Holiday Parking has several floors as well as Airport Parking, never used them but I know of people who do. Easy Parking is just one floor but they have 24h personal and security cams in both buildings.
I can´t think off a parking place without insurance nor security...they would just get into big troubles if anything happen to a vehicle!
I have seen once a lamborgini Reventon, also the latest ferrari models and very expensive cars using those parkings I said before, and the customers keep coming back. So I dont think all of them are that bad, some of them are good in my opinion.
Holiday Parking and Easy Parking joined and actually are the same, they are together in a building with several indoor parking floors for short and long term.