Not sure you can compare Feltrinelli with Ballyfin. Feltrinelli has such a stunning setting by the lake and interiors are done by Pamela Babey of BAMO, under Bob Burns, so lots of hotel expertise which means rooms/suites are relatively ergonomic (i.e. electrical sockets in the right place).

Ballyfin is a living museum, very houseparty in style, but the dour Irish landscape cannot really compete with Feltrinelli. North Americans will love it because of the history and white-glove dinner service. Europeans probably less so as they are not so impressed with history as it tends to surround them.