Where do most of the senior expats live in Toulon, France?

We are looking into relocating to Toulon, France, and are looking for one-bedroom apartments, in this city.  We would prefer living in a building where there are many other senior expats.  I would appreciate your thoughts, on this matter.  We plan on moving from St. George, Utah, in about  a year.

Thank you.

Byron and Margarita Kerby