Location - fantastic, whether you are on a ski trip or interested in Mammoth Lakes' Village. The shuttles stop 30yards from the hotel. The person at the reception was nice enough. The room was warm, and the fridge & microwave both worked. Nights were mostly quiet (no parties near our room, or kids running outside our door with ski boots). That about sums up the positive aspects of our stay.
The mattress and pillows - super uncomfortable and inadequate. The mattress was squeaky and knotty/uneven; the pillows (3 total on a queen size bed) came in two flavors: (a) hard as a rock and extra thin, or (b) small,fluffy & collapsing to nothingness with the slightest weight on it. The bathroom - falling apart, with rust everywhere and the tub literally cut-up with surface chunks missing. We stayed at the same place 5-6 years ago and I don't see evidence of a single dime invested in it since.
Not even for basic maintenance, apparently: three days after the recent snow storm the driveway up to the hotel was not cleaned, making it impossible for cars even with chains to enter directly from the Main St. Of course the parking lot too was covered with ice & melting snow.
The room "cleanliness": there was a used towel with a yucky stain hanging on the BR door when we first walked in! The comforter and the sheet were terribly stained to the point where we had to throw an old blanket I had in my car over the bed for it to look acceptable. There were human hairs under the bed covers :-P, etc.