Mt. Washington Resort in New Hampshire.
Honest opinion: It's a beautiful hotel. Really. The staff was wonderful....awesome people. BUT...it's too darn old. The floors creak. You can hear every cough from the people next door because the walls are so thin. There is no heat in the bathroom. While we were there, a variety of people were at the front desk complaining about their rooms being freezing. My last night there, MY room was freezing. The bed....good lord, the bed....I swear they got it from a dumpster. Part of the charm of the place is that it's 100 years old....a 100 year old mattress is NOT charming. I actually checked out early because I did not want to spend another night there.
However, I would definitely go back to visit...eat in the restaurant...I might be able to stay ONE night, but the overall experience as far as being in the room just wasn't worth the $600./night price tag. I loved being there, but I found myself dreading the night when I'd be forced to go back into that room and try to sleep with all the noise on that awful bed.