Here is a list of suitable hotels in Aachen at various price points:
€€€
€€
Mercure Hotel Aachen Europaplatz - https://www.mercure-aachen-europaplatz.de/
Motel One Aachen - https://www.motel-one.com/de/hotels/aachen/hotel-aachen/
Mercure Hotel Aachen am Dom - https://all.accor.com/hotel/5326/index.de.shtml
Cityhotel Kaiser Karl Aachen - https://hotel-kaiserkarl.de/
Hotel am Marschiertor - https://www.hotel-marschiertor-aachen.de/cms/
€
B & B Hotel Aachen Hbf - https://www.hotel-bb.com/de/hotel/aachen-hbf
bp24 Hotel Aachen - https://www.bestpricehotel.de/hotels/
Hotel ibis Budget Aachen City - https://all.accor.com/hotel/8027/index.de.shtml
Further Information at https://www.aachen-tourismus.de/
