Chalet Ribot is less that an hours drive by bus or car from Grenoble city centre.
The three nearest airports are :
Grenoble airport 1 hr 25 mins away
Lyon airport        1 hr 50 mins away
Geneva airport   2hrs 50 mins away

Useful Links

www.letour.fr  Tour de France offical site
www.photobreton.com  Tourists climbing the Alpe
http://grenoblecycling.free.fr  Info on all the big climbs
www.autoreservation.com  Best car hire companies
www.alpedhuez.com  Alpe d Huez offical website
www.tourisme-oisans.com  Local tourist office website
Friends with bike friendly accommodation:
www.ecrinslodge.com
www.kingofthemountains.co.uk
www.allmountainventure.com