It's actually in Argentiere, up the valley towards La Tour and from what I can tell, used to be a bit of a dive. But it's been totally overhauled by it's new owners and is rad! Lively with a great menu - the Indonesian pork was lush and a plain spaghetti, tomato and basil was really delicious. There is a back area with a big oak table and blackboards with the daily specials written in chalk. Not overtly English but not all tartiflette and chalet-style either. Worth checking out.
216 Rue Chalet Straton, Argentiere, Chamonix
Google map: tinyurl.com/yby3s43