Mattress was antiquated and very uncomfortable, sagging in the middle. Not what one would expect in a 4 star hotel. O'Connell Street, where the Gresham is located, is about 15 minute walk from the real centre of Dublin - Grafton Street.
We found the bedroom to be spacious and clean.The iced fairy cakes to welcome us a very nice touch.Unfortunately we felt the staff to be rather stand-offish - not as friendly as we had experienced elsewhere. The food in the bar and lounge was very good but unfortunately the main restaurant was closed in the evenings.