Parking it's free, breakfast...maybe
The parking is free but you have to pay for breakfast.
Free parking yes - free breakfast no ( depends on the rate you booked I guess)!
There is a breakfast which you have to pay for it it isn't included in your room charge. The parking outside is free, there is an garage underneath which you have to pay for. Enjoy your trip!
Get an answer from Mercure Chamonix Les Bossons staff and past guests.