Alpy Transfers (Alpy Bus) run a regular transfer schedule from Geneva to Chamonix bus station (1.5h) - you can then get a local bus from the same station to right in front of the Hotel. (from €15).

Or you can use their door-to-door service and search for trips from Geneva to 'Les Bossons' (the neighbourhood of Chamonix that the Hotel is located) and it will drop you off at the hotel entrance (from €37).

Swiss Tours run regular buses from Geneva airport to Chamonix every day at: 06:00, 07:45, 10:00, 12:15, 14:30, 16:30. From Chamonix Bus Station you can take a local bus from the same station to right in front of the Hotel (from €11)