Depending on the Summer School course, there are various accommodation options that TU Braunschweig can organise for you. For example, you can get a room in a host family or a shared flat for the duration of your course. If you spend an exchange semester at TU Braunschweig directly after your Summer School course, you have the option of applying for a room in a student hall of residence.
All forms of accommodation come with additional costs of around 300 to 600 euros per month.
Of course, you are free to organise another form of accommodation on your own (e.g. hotel, hostel, AirBnB). You will find helpful information on the following websites:
Overview of hotels in Braunschweig
Sublet rentals
Couchsurfing
Airbnb