Amazing lake view from the room / location is great and public areas of the hotel are as you'd expect. The gym was great too. Breakfast had many options, a little average on the quality side, but definitely edible overall.
We felt the room was a little under par - no tea/coffee-making facility, shabby TV, not that we ever watch the TV, just looked a bit rubbish. The biggest issue was the mattress/bed - we like our sleep and although the bed wasn't uncomfortable, it felt way under what you'd expect from a 5* hotel, every slight movement either of us made would wake the other one up. Also, sitting up in bed moved the bed away from the wall. It didn't feel very solid - ikea springs to mind. We also thought the staff were a bit stingy behind the bar, we wanted a couple of large glasses to take up to the room one night, and they would only give us small tumblers saying we weren't allowed to have different glassware in the rooms. The staff were very helpful elsewhere though.