I stayed at the Summit Lodge & Spa in January, 2013 (Sunday through Wednesday), and I'd stay there again.
The lobby was very comfortable with couches, a fire, coffee and water. The reception staff were inconsistent - some were great/very helpful, but others were inattentive.
We stayed in a two queen room and overlooked the road (all the 2 queen rooms overlook the road). I would say it was a 3.5 star hotel. The room was quiet and we had a great view of the mountain over the rooftops. We loved the a kitchenette (small fridge, coffee maker, sink, cooktop, kettle, toaster). The beds were comfortable and the were several types of pillows. The gas fireplace was great to counter-act the draft along the floor. The bathroom was a reasonable size.
My friend went to the spa for a massage and said it was a really nice experience. We used the hot tub and sauna every night - loved that.
We ate at Elements (the restaurant on site) several times. The food was great and the service was prompt.
They served hot chocolate and bailey's one afternoon, but I missed it :(
Really, the only complaints I have are very minor: no hand lotion in the room (when I asked for some they sent some up right away, but it was past its expiration date); we ran out of tissue and toilet paper, so had to ask for more; they didn't clean our room until after 4pm; and they didn't vacuum at least one day. However, the housekeepers were very friendly and even washed our dirty dishes.
This hotel was very near a grocery store (IGA), which was really convenient given our kitchenette.
Bottom line - I have stayed at various places in Whistler that were all nicer than this. But I couldn't beat it for the price we paid. I'd definitely stay here again, price dependent.