We are in Cochem for 3 days (starting 24 April). Took the train up from Trier with no problems. The DB app works great and and easy ride to up here. €38 for the 2 of us. Having a car would be a complication: narrow streets, limited parking, and large pedestrian only area
Walked over to laundry that is mentioned in the guidebook. It is closed due to illness according to the sign on the door. The hotel manager says it is unlikely to be reopened and that she was planning to close it permanently later in the year.
Staying at the Boutique Hotel Lohspeicher. Located on a nice quiet side street, The owner and wife are chefs and operate the restaurant on the ground floor.