I love the window seats, especially upper deck 62K, 64K. In 64K you will get three windows for yourself. Ok it's rear facing but after takeoff you will not notice if you're forward or rear anyway.
I tried the 64K for the first time yesterday and it's a lovely seat. Very private and a good substitute if 62K is occupied. When the privacy screen is raised you have your own private cabin, better than some seats in F.