Hey man, it's in Koln but you can go to this place https://isar-koeln.de/ueber-uns/ They speak a bunch of languges, including English. Just ask for whatever language you want. You pay 80 or 90€ don't really recall for the declaration and it takes 10-15 minutes. They will also tell you what is and isn't admissable in your returns to maximize them. 100% recommend.