Castleknock Hotel Leisure Centre in Dublin Address: Castleknock Hotel, Porterstown Road, Castleknock, Dublin 15 Phone: +353 (0)1 640 6300 Gym Website: www.castleknockhotel.com/leisure-ce... Gym Facilities: Cardio Equipment, Childrens Pool, Jacuzzi, Sauna, Steam Room, Swimming Pool, Weight Training Free Advertising Page (Click here to Upgrade Advertising)