Hello, are there laundry facilities in or near the hotel? Thank you!
To be honest: No idea:-)
I'm sorry, I don't know. My guess is that you could have laundry done at the hotel, and one suggestion is to contact them to ask. Another possibility is laundry facility in the train station. It is a large train station, much like a large mall. You might investigate that possibility there.
Get an answer from Motel One Berlin-Hauptbahnhof staff and past guests.