One of the best summer terraces in town. It's a mix of a beach club with a restaurant. Go during the morning for breakfast with a view and a cool breeze from the ocean. Go in the evening for some chilled music and drinks by the water. Do you have a toddler? They'll enjoy playing in the sand and gravel, finding random broken pieces of glass or nails (just look out), but for real, they'll enjoy the gravel while you have a good coffee or some good fresh foods focused on vegetables.
Great place, great service, lovely for lunch with some friends or to hang out all day on the 'beach' that they have constructed just along the River Ij. One of my favourite bars in Amsterdam, if you're visiting or looking for a day or night out, then 100% recommend. Go and enjoy!