IFR to EDDM
I did this in my Mooney Ovation 3 years ago, IFR from Troyes in France.
You will need a slot and some form of noise certificate.
I don't recall it being overly expensive and the GA was priced as one might expect from a big airport with mandatory handling.
There is nowhere else accessible for GA in the area - I looked into this prior to going to the main airport.
You need to call to book a slot and be instrument rated.
SB