You didn't specifically ask about
accommodation in Grenoble but there
is a nice centrally located Ibis
Hotel. While I never stayed there as
I was studying it was a good hotel.
Also if you have time you can hike up
to fort Bastile that overlooks the
town. It gives a good view of the city.
Just to let you know you Grenoble is a great location for day trips. I have listed times by train or bus below
Annecy-2hrs by train Geneva -2 hrs by train Chaminox-3 hrs by bus
Hope this helps and let me know if you have any specific questions about Grenoble as I spent 3 months there studying French in 2001.
Tom, London, Canada