Monte Carlo is nice for a day.
Visit the church that Reiner and Grace married.
Definitely take a sketch and walk the F1 track. Might be already fenced off.
Beau Rivage -Metropole
GO TO NICE. I really liked Nice. Beach, bars, floor market. McDonalds (just kidding)..
Watch "To catch a Thief" and try to find those roads..(kif you have a car).
This should get you going:
http://www.gptours.com/index.php?command=show&what=tours&tourid=9051&package=A&tab=accommodations&which=f1