For planning your trip to the Independent Days International Filmfest you may use omio. It compares different travel opportunities via bus, by train or plane:
www.omio.co.uk/travel/karlsruhe
Looking for a HOTEL ROOM? You may find and book hotel rooms on the website of Karlsruhe tourist information. Just fill in your date of arrival and departure to find and "book accomodation":
www.karlsruhe-erleben.de/en
Looking for a RESTAURANT? Find some information here:
www.karlsruhe-erleben.de/en/culinary-delights
If you prefer staying at a youth hostel, you may book your room by using this link on the
website of Karlsruhe Tourist Information.
Check out Airbnb for free and affordable rooms:
www.airbnb.de/karlsruhe-germany/stays