The Fife Arms in Braemar already had a reputation for furnishing every guest room as if it were a separate small museum — Picasso lithographs, Pictish stones, taxidermy, embroidered ceilings — and Russell Sage Studio’s new addition is a literal hidden room dressed around Chanel’s longstanding affection for Scotland. Worth pairing with a long walk in the surrounding Cairngorms; a hotel where most of the interest is inside asks a lot of weather to compete.