My wife and i struggle with insomnia and we were not aware that a train runs behind the hotel all day and night - however the staff went to great lengths to move us around and get us a room least affected by the train which they did successfully. We still heard it throughout the night but less loud and abrupt than on the other side of the hotel.
Other than the train, the hotel is gorgeous as it has been recently renovated and the food is excellent - loved the quesadillas, the chicken Florentine, the shrimp pasta and the chocolate desire cake was highly addictive!