Hi, so I'm going to make you discover my city: Rennes.
It's situated in the North West of France, in Britanny. With it's 200 000 residents, it's one of the 11 biggest town in France.
The sea is at 1 hour in car. (The Mont Saint Michel is not so far)
It's a good place to have a band, espacially a rock band. There's a lot of associations that organizes lots of concerts. So here, there's a lot of rock n' roll people, who are very open minded.
It's a student city, so every week end it's the big party in the center, in the "Rue de la Soif" (thirst's street), which is known in all the world. There's a lot of nationality because of students too, so it's a big mix of different people!
Hope one day you can come here :)