Near Edinburgh Castle, this luxurious 5-star hotel has a rooftop hydro-pool and a state-of-the-art gym. Princes Street is close by. The Thermal Suite at One Spa offers heat experiences including an aroma grotto, rock sauna and hammam. Features include 5-star treatments and a 19-metre swimming pool. Sheraton Grand Hotel and Spa has a superb Italian restaurant and 2 stylish bars. Please note, an additional fee will be charged for use of the spa.