Hi, I walked this route in August/September last year. Do get the Amis de St Jacques yellow guidebook, they sell it through Confraternity of St James,it is useful for Accueil Pelerin ph nos and addresses, these are by donation private homes where one can stay, a bit hit and miss, but I have had some experiences. I used the German Outdoor Guide as well. I am attaching my blog.
City Hostel Geneva is best value for money. Cheap and simple and clean.
Beaumont, Fromagerie a great first stop. There is the most beautiful new gite just after Merigneux, called La Guette ph 04 74 48 36 15, the man who owns it is a bio farmer and he cooks beautiful meals from produce and meat he grows himself. He is out on the farm most of the day, so best to ring around 6 pm or so.It is a few km before St Julien Moulin Moulette, which is not really nice, I did not like the feel of the place and accommodation was not great there. Anyway you can read it all in my blog. Let me know if you would like other help. I did book ahead, it worked very well. Cheers, Gitti