This hotel is on a beautiful street facing the English Channel. We booked there intending to complete The 7 Sisters Walk, originating in nearby Seaford. Our plans changed a bit...we walked from the hotel toward the cliffs(did not complete the full trail). Views from the cliffs are breathtaking and were well worth our side-trip from London. However, I don't think we would have enjoyed staying at The Halcyon more than a single night. It was not easy lugging our bags up several flights of stairs. While the sea views from our rooms were incredible, those are about the only sights that resembled the photos from the hotel's website. Both of our rooms were tired and worn. The mattresses were fair, but the pillows were flat and uncomfortable. The bathroom in one room had a strong odor of mustiness and the shower barely drained. Even with the very low water pressure and taking a quick shower, I was standing in 2 inches of water by the time my shower ended. My daughter needed to wait half an hour before she could shower, or we would have risked an overflow. *There were no problems with the bathroom in my older daughters' room.
The breakfast was included in the price of the hotel, so I can't complain much. Had I paid anything for it, though, I would have been very disappointed. There were a few pieces of fresh fruit, a couple boiled eggs, some yogurts, cheap juices, and stale cereal. The coffee was instant. Tea was available, but I didn't have any.
The staff was friendly and welcoming.