We didn't have a car so didn't use the car park. I would refer to the hotels website.
Sorry don't take my car. Try asking hotel, they will give you information regarding parking.
Sorry unable answer as I don't take my car. Contact hotel and they will inform you.
I didn't park. I am from the US and took trains.
I think it was like 30 EUROS. Can't quite remember but definitely less than 50 EUROS per day.
There is valet parking, I dont know though how much it is.
Get an answer from Breidenbacher Hof, a Capella Hotel staff and past guests.