The Four Points by Sheraton has a pool and restaurant/club on the roof — Level 43 Sky Lounge — with outdoor seating and a beautiful view. It’s not cheap but then you are paying for more than just the drinks and food.
Notes on the photo: The shot above is heavily compresed and you might see banding in the sky. The original has enough tonal capacity not to exhibit this effect but I had to compress it, to save on bandwidth and load times.
Shot with Sony A7R II + FE 28 mm f/2: f/8, 8 s, ISO 100.