As all the guidebooks say, there's no doubt this is the place to eat in Lake Louise (and possibly in the whole Banff-Jasper area). Delicious food (the Zurich-style veal was particularly good, though I neglected to check it came from a non-crated source), outstanding wines and genuinely exemplary service make it a place to splash out. The owner walks the floor every evening too, not in a showy way, but out of a genuine sense of wanting to provide that personal touch. This was our best meal in our two week trip to Canada (though the RiverCity Grill in Vancouver came a close second). Not cheap, but you could easily play 1/3-1/2 the amount on a completely bog-standard meal in Jasper or Banff, so why not splash out?! (Incidentally we got the sense that the restaurant's better than the hotel itself, so you could stay cheaply across the road at the HI International then really dine in style!)
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.