London only has one rooftop hotel pool , at The Strand . Since opening in 2006 , Hotel Molitor has been a top Parisian pool destination . The Ritz - Carlton , Millenia Singapore offers butler - drawn baths in your room . Hotel Arts Barcelona 's spa offers a technology - based treatment to counter the effects of smartphone over - wear .
London only has one rooftop hotel pool , at The Berkeley . Since opening in 1929 , Hotel Molitor has been a top Parisian pool destination . The Ritz-Carlton , Millenia Singapore offers butler-drawn baths in your room . Hotel Arts Barcelona 's spa features a technology-detox treatment to counter the effects of smartphone appendage-itis .