We have used Chamonix All Year for a number of years now and have been generally well pleased with the apartments and the service. We were offered early check in this year, which was very helpful and enabled us to get nicely set up for skiing the next day.
The apartment is centrally located with underground parking. This is tight and requires patience to get into the relatively narrow slots - but it is manageable although a challenge for the largest 4x4s. The route from the garage to the apartment is a bit circuitous - note that there are "borrowed" shopping trolleys in the garage which are invaluable in avoiding too many trips from car to apartment.
The apartment was typically compact, but with a balcony looking up the valley towards Le Tour. Most aspects were fine but we had a few gripes:
The kitchen is limited. Four-ring electric hob is fine, but there is only a combo microwave oven. This is fine if you plan menus accordingly, or eat out, but is it slightly restrictive.
The en-suite shower with curtains, not fixed screens, is probably OK for an anorexic super-model, but not pleasant for anyone wanting a decent hot soak after a hard day on the slopes,
The water pressure is low. Both showers can best be described as enthusiastic dribblers rather than full-on showers. There was also a problem with hot water for the whole block on the first day, but this was soon fixed on Monday - French emergency plumbers apparently not wanting to work on Sundays! Nevertheless to get hot water there was often a need to turn on all of the hot taps and let the water warm up for a couple of minutes
Finally the Wi-Fi was pathetic. We measured it at 80 kbps down and 110 kbps up. Honestly, a piece of wet string would have been more effective. We called C-A-Y but never received any response, and ended up using a 'phone as a hot-spot.
A note of caution regarding security. As we were moving into the apartment my wife dropped the pillow she had been using in the car. By the time she went back to pick it up, it had vanished. We spoke with house-keeping staff and the Pierre et Vacances front desk, but to no avail: there was obviously a light-fingered resident in one of the other apartments.
On the really positive side all other aspects were brilliant: comfortable beds, plenty of storage, decent sitting/dining area. Moreover, there is a fantastic bakery on the ground floor and an amazing restaurant, Beurre Noisette, close by. Also the Mont Blanc Brasserie is only a 5-10 minute stroll and well worth a visit.
Overall, we would recommend this apartment, but please C-A-Y sort out the Wi-Fi and see what you can do about the showers