The New York Marriott at the Brooklyn Bridge is a 665-bedroom hotel located in downtown Brooklyn, just 1.5 miles from Manhattan, and next door to NYU, the venue for the 6G Summit.
It provides all luxurious amenities expected from a Marriott, including their traditionally amazing beds and pillows, gorgeous views of the Manhattan skyline (not from all rooms), and much more, which you can read about on the hotel official website here.