A list of hotels in Strasbourg can be found on the following link :
http://www.iphc.cnrs.fr/Hotels-a-Strasbourg-Hotels-in.html
We recommend booking hotels close to the train station, as a fast bus goes from the train station to the IPHC (about 5 minutes).
http://www.iphc.cnrs.fr/Acces-a-l-IPHC-Access-to-IPHC.html#en
