Im heading down this summer, by far the best spot is a place called Bikevillage just outside Borg in a little place called Landry. And yes im probablly a little bias, I used to work there, but it really is [b]that good...
Im pedalling down, leaving about the 20th of July to arrive on the 3rd of August, a combination of Bivi and Campsite should see me through, obviously with a sutable quantity of cheese and wine. Give me a shout if you fancy it - the more the merrier and all that.
Im booked on a combination of trains to come back, its going to take most of a day to get back to blighty but the train has come it at about 80 euro all in - you do need to be careful that the train can acccept bikes and it needs to be in a bag.
As i say drop me and email if you want more details and ill dig out the research that i did on trains etc.