It used to be my favorite restaurant, but has gone way down in quality over the last few years. On our last visit, the food was average, and in one case, sub-par. When we sent a plate back, the Chef actually came out and confronted us. It wasn't a pleasant, "what can I do to help?" talk. He was angry that we'd sent a plate back, and argued that it was cooked perfectly.
I also agree that the restaurant looks uninteresting. The lobby of Wilderness Lodge is "visually stunning." The dining room is ok.
And "judging a restaurant by pictures of the dining room?" Heck yeah! It's certainly something that I take into account. I'm interested in the whole dining experience: food, service, and AND atmosphere. Watch "Kitchen Nightmares." They nearly always redo the dining room when trying to fix a restaurant.