We`re off to Corsica in a few days! We are flying from Montreal to Nice & return (Sept.30 - Oct.15, 2012), then taking a 5.5 hr ferry from Nice to Bastia. Our normal travel pattern is to stay in one place for at least a week, but we are dividing our time on Corsica among Bastia, Bonifacio and Cargese - 3-5 days in each locale, with a couple of days in Nice.
In a perfect world our stay would be longer, but there are family responsibilities back here in Canada. The same comment applies to the choice of our time of year to visit Corsica.
Other flight options include flying to London or Paris, then taking a short flight directly to Corsica. We have only been to Nice once, on a day trip back in 2005 from the Luberon to visit a friend of one of our children. My wife liked it a lot - “I’ll stay here. You can go home. Just send money” was her comment. We are looking forward to a couple of days on the Cote d'Azur.
P.S.I bought the map below on a visit to Drôme Provence in 2008. Corsica has been on my list for a few years