The unusual architecture of Hotel Belvoir is the first giveaway; overlooking Lake Zurich this beautifully appointed hotel can boast of its fine staff, excellent cuisine, beautiful service, prompt response to their guests particular requests and thoughtful touches. All of this adds up to a luxurious stay.
It should be noted, however, that the terrace separations between the rooms do not lend themselves to any privacy whatsoever, and my companions and I found the bathroom setup with the WC and shower in separate compartments (not to mention the sink/makeup area) quite awkward and uncomfortable. (Opaque doors do not add to personal privacy, either....)
However--on the distinct plus side is the great working area, the beautiful scenic lake, the unusual amenities (like binoculars, canvas bag, robes), the reliable Wifi, and the swift response to whatever we required.