"Rooftop pools are a relatively common feature at luxury hotels, and plenty of Japanese inns have onsen baths. But Candeo Hotels Osaka The Tower merges the two concepts, setting a new standard in Japan and abroad: its 31st-floor Sky Spa earned the Guinness World Record for the highest open-air infinity-edge public bath in existence. With panoramic views over Osaka, it’s the hotel’s main selling point, but there’s plenty more to like here: the riverfront location beside Dojima Park, a generous Japanese breakfast served in the airy 17th-floor restaurant, a state-of-the-art fitness center, and modern rooms with floor-to-ceiling windows, built-in sofas overlooking the city skyline, and sleek wood-paneled bathrooms with spacious walk-in showers." - Tablet Hotels