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Wolfsburg is a convention and meeting city as beeing the headquarter of Volkswagen a tourist destination for automobile friends. There is ample accommodation available which ranges from youth hostel to B&B (often called 'Pension' in German) to luxurious hotels.
Wolfsburg is a walking city and therefore it is recommended to choose a Downtown accommodation.
The Ritz-Carlton Wolfsburg is just one of the many possibilities you have. The Ritz-Carlton is located in the 'Autostadt / VW Theme Park', see 'must-see', top attractions.
You can e.g. contact the Wolfsburg Tourism Office (Wolfsburg, Germany, Visitor Info & Getting Around) and check their hotel directory.If you want to go online, you can search for hotels in Wolfsburg, too.
German Youth Hostel Association (Dt. Jugendherbergen)