The Royal Marine overlooks Dublin Bay and has direct access to Dun Laoghaire Promenade and Pier. It features a health club, spa, indoor pool and air-conditioned rooms with free WiFi. There is a DART train line just 2 minutes walk from the Royal Marine, which has regular services to Dublin City. From outside the hotel there is a coach service to and from Dublin Airport. The Pier Health Club has a steam room, spa bath and free weights. A range of indulgent treatments are on offer at the Sansana Spa including a rock sauna, a mud room and experience showers. Designed over 2 floors, Hardys Bar offers fine cuisine in a modern environment. The Dun Bistro has stunning harbor views and serves modern European cuisine. There are plenty of beautiful coastal and countryside walks, including Peoples Park, in the immediate vicinity. Free parking is available at the hotel. Notable former guests include Charlie Chaplin and Queen Victoria. Swim caps and flip flops are requested for using the pool and are available at the hotel for an extra cost.