The Pool at Sheraton Grand Hotel & Spa, Edinburgh

"The open-air rooftop hydrotherapy pool is still a winner,, as is the Roman-style thermal suite with its sauna, steam room, tropical showers, hammam, and tepidarium"

"The largest of its class in the city, the property has a six-floor spa, which includes an impressive rooftop infinity pool with views of Edinburgh Castle -- although the sauna and steam baths cost extra"

"The wet plinth room shows off salt and oil scrubs and the indoor/outdoor rooftop hydropool gives guests yet another relaxing experience"

"There is even a cool rooftop heated hydro-pool with strong water-pressure jets"