We have made pre-reservations at several hotels in Grenoble. Except the last one (Hôtel UGEREL), all are located in downtown, within a short walking distance to the tramway line B that goes to the University Campus, where the conference is located. Hôtel UGEREL is located in the south of Grenoble, near the bus line 26 that goes to the Campus. We strongly suggest that you make your reservation as soon as possible. Otherwise you run the risk of having to stay in a much more expensive and much less conveniently located hotel (that is, above 100 € per night, and certainly not on the tramway line B that goes directly to the Campus). Here is the list:
You can find the hotel locations on any interactive map website, e.g., Map24.