Sure - Cannes, Juan-les-Pins, Nice, Villefranche, Beaulieu, Monaco - lots of beautiful boats - time of year is important. Cost obviously is a huge issue. Assuming that you are not interested in a yacht rental, the only compnay I know off hand that you could email about times next year is Riviera Lines which goes out of Cannes and Juan-les-Pins - just east of Nice.